ASTROSAT CZTI

Data Quality Report

Orbit 20190310_A06_003T01_9000002786_level2

Creation date: 2019-03-12T15:56:52.939593
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/AS1A06_003T01_9000002786cztM0_level2_bc.evt modeM0/AS1A06_003T01_9000002786cztM0_level2_quad_clean.evt
Size (bytes)4,047,909,1201,134,368,640
Size3.8 GB 1.1 GB
Events in quadrant A25,631,3277,179,173
Events in quadrant B20,116,7287,343,677
Events in quadrant C20,944,7817,139,830
Events in quadrant D49,677,8796,428,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018620
B018620
C018620
D018620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02102700
B01941270
C01996850
D02957880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9139816671.823891%
B9139913501.477040%
C9139919072.086456%
D913991093311.961838%

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 107213 91395 292 292 0.27% 0.32%
B 107214 91392 23 23 0.02% 0.03%
C 107214 91396 52 52 0.05% 0.06%
D 107214 91394 4821 4821 4.50% 5.27%

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 0 13 6163263 5806.95 4925 4842 1060.5
A 6 16 298040 276.46 4925 4842 1060.5
A 13 254 116321 105.12 4925 4842 1060.5
B 0 230 153363 159.1 5005 4882 933.3
B 4 216 149937 155.43 5005 4882 933.3
B 3 64 138198 142.85 5005 4882 933.3
C 9 54 814645 713.44 4852 4827 1135.1
C 9 221 765419 670.07 4852 4827 1135.1
C 3 233 702593 614.72 4852 4827 1135.1
D 7 238 17328239 16032.9 4670 4508 1080.5
D 1 52 12232661 11317.0 4670 4508 1080.5
D 13 168 1251065 1153.67 4670 4508 1080.5

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