ASTROSAT CZTI

Data Quality Report

Orbit 20200227_A07_142T01_9000003540_level2

Creation date: 2020-03-05T19:01:29.359259
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_142T01_9000003540cztM0_level2_bc.evt modeM0/AS1A07_142T01_9000003540cztM0_level2_quad_clean.evt
Size (bytes)11,676,988,8003,849,868,800
Size10.9 GB 3.6 GB
Events in quadrant A64,236,13624,898,841
Events in quadrant B68,160,37425,136,892
Events in quadrant C69,190,33723,705,921
Events in quadrant D132,021,25522,703,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04690
C04690
D04690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06176140
B06328980
C06439060
D08672510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059960
B059960
C059960
D059960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29446330031.019823%
B29446442481.442621%
C29446370592.397245%
D294463201296.835833%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 345369 294471 0 0 0.00% 0.00%
B 345369 294466 45 45 0.01% 0.02%
C 345369 294463 428 428 0.12% 0.15%
D 345369 294419 3998 3998 1.16% 1.36%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 466881 127.04 16569 16304 3546.7
A 2 250 193177 49.87 16569 16304 3546.7
A 11 29 114061 27.56 16569 16304 3546.7
B 0 189 1207416 387.87 16612 16274 3071.0
B 15 33 1012963 324.55 16612 16274 3071.0
B 0 245 338572 104.95 16612 16274 3071.0
C 10 9 5093606 1389.82 15657 15630 3653.7
C 0 10 2507401 681.99 15657 15630 3653.7
C 7 247 1307998 353.72 15657 15630 3653.7
D 12 218 27176966 7560.14 15628 15134 3592.8
D 8 195 24308946 6761.87 15628 15134 3592.8
D 1 52 12362083 3436.61 15628 15134 3592.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter