ASTROSAT CZTI

Data Quality Report

Orbit 58526

Creation date: 2026-07-23T10:34:53.106387
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_044T04_9000006592_58526cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58526cztM0_level2_quad_clean.evt
Size (bytes)523,468,80091,906,560
Size499.2 MB 87.6 MB
Events in quadrant A4,151,950627,246
Events in quadrant B3,447,907695,904
Events in quadrant C3,445,646615,229
Events in quadrant D7,836,783400,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165682
B0145432
C0147342
D0277507

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63672533.973614%
B6367741.162243%
C6367731.146537%
D6366196430.851398%

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 7567 6367 226 226 2.99% 3.55%
B 7567 6367 27 27 0.36% 0.42%
C 7567 6368 59 59 0.78% 0.93%
D 7565 6366 1936 1936 25.59% 30.41%

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 17 524721 2997.83 704 687 174.8
A 10 251 490048 2799.48 704 687 174.8
A 12 114 157671 898.06 704 687 174.8
B 2 249 98213 649.2 711 686 150.2
B 4 171 97146 642.1 711 686 150.2
B 10 247 78701 519.32 711 686 150.2
C 6 223 149422 777.25 693 687 191.4
C 13 3 127254 661.4 693 687 191.4
C 12 249 98168 509.41 693 687 191.4
D 2 249 4573819 29369.75 545 520 155.7
D 3 12 846941 5435.72 545 520 155.7
D 8 240 135735 868.35 545 520 155.7

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