ASTROSAT CZTI

Data Quality Report

Orbit 20200801_A09_012T03_9000003782_level2

Creation date: 2025-12-14T02:40:18.157168
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A09_012T03_9000003782cztM0_level2.fits modeM0/AS1A09_012T03_9000003782cztM0_level2_quad_clean.evt
Size (bytes)98,133,120127,984,320
Size93.6 MB 122.1 MB
Events in quadrant A599,572815,905
Events in quadrant B577,318821,575
Events in quadrant C591,254811,798
Events in quadrant D516,454739,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203080
B0205340
C0206890
D0235240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99281551.561241%
B99281541.551168%
C99282302.316680%
D99282602.618856%

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 11673 9928 0 0 0.00% 0.00%
B 11672 9926 0 0 0.00% 0.00%
C 11673 9928 0 0 0.00% 0.00%
D 11673 9925 0 0 0.00% 0.00%

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 29 482 8.39 156 147 39.9
A 9 19 479 8.32 156 147 39.9
A 7 110 451 7.62 156 147 39.9
B 2 9 479 10.66 152 145 31.3
B 5 128 414 8.58 152 145 31.3
B 14 254 412 8.52 152 145 31.3
C 1 81 468 7.82 155 147 41.0
C 1 80 458 7.58 155 147 41.0
C 3 202 435 7.02 155 147 41.0
D 6 231 374 5.87 147 135 40.7
D 7 3 371 5.8 147 135 40.7
D 15 46 370 5.77 147 135 40.7

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