ASTROSAT CZTI

Data Quality Report

Orbit 20200930_T03_240T01_9000003906_level2

Creation date: 2021-01-07T23:00:16.654138
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/AS1T03_240T01_9000003906cztM0_level2_bc.evt modeM0/AS1T03_240T01_9000003906cztM0_level2_quad_clean.evt
Size (bytes)301,155,840115,104,960
Size287.2 MB 109.8 MB
Events in quadrant A1,640,838770,405
Events in quadrant B1,433,928795,799
Events in quadrant C1,183,851767,307
Events in quadrant D4,429,367716,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141420
B0132690
C0126720
D0226560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521191.903391%
B62521001.599488%
C6252480.767754%
D62524987.965451%

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 6702 6252 0 0 0.00% 0.00%
B 6702 6252 40 40 0.60% 0.64%
C 6702 6252 0 0 0.00% 0.00%
D 6702 6252 200 200 2.98% 3.20%

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 14 235 413919 5915.7 309 303 69.9
A 6 16 24137 340.88 309 303 69.9
A 13 254 10041 139.28 309 303 69.9
B 0 189 207581 3295.85 315 307 62.9
B 0 219 11691 181.02 315 307 62.9
B 3 112 5724 86.14 315 307 62.9
C 15 208 7211 92.93 305 303 74.3
C 2 16 2242 26.08 305 303 74.3
C 13 61 1773 19.78 305 303 74.3
D 1 52 3154182 43641.85 299 289 72.3
D 2 250 90414 1247.1 299 289 72.3
D 2 234 26844 367.45 299 289 72.3

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