ASTROSAT CZTI

Data Quality Report

Orbit 57829

Creation date: 2026-06-06T05:22:23.423741
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/AS1A14_083T16_9000006580_57829cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57829cztM0_level2_quad_clean.evt
Size (bytes)691,539,84088,963,200
Size659.5 MB 84.8 MB
Events in quadrant A3,453,165635,048
Events in quadrant B3,134,345695,065
Events in quadrant C8,618,957455,929
Events in quadrant D9,898,979462,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150612
B0139802
C0300872
D0338085

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63702694.222920%
B63701081.695447%
C6370197430.989011%
D6369156824.619249%

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 7540 6371 120 120 1.59% 1.88%
B 7540 6371 23 23 0.31% 0.36%
C 7540 6371 1540 1540 20.42% 24.17%
D 7539 6370 1774 1774 23.53% 27.85%

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 10 251 572651 3266.97 689 673 175.1
A 3 250 94721 537.17 689 673 175.1
A 3 245 63228 357.3 689 673 175.1
B 5 185 82198 554.36 686 661 147.1
B 4 158 76429 515.14 686 661 147.1
B 0 63 66938 450.61 686 661 147.1
C 9 38 5321793 32060.28 591 586 166.0
C 15 224 721402 4342.92 591 586 166.0
C 14 254 114894 688.71 591 586 166.0
D 12 110 6149437 33747.72 622 590 182.2
D 2 249 414033 2269.17 622 590 182.2
D 8 160 402094 2203.64 622 590 182.2

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