ASTROSAT CZTI

Data Quality Report

Orbit 57310

Creation date: 2026-05-02T08:30:00.371095
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_049T03_9000006570_57310cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57310cztM0_level2_quad_clean.evt
Size (bytes)1,488,634,560344,053,440
Size1.4 GB 328.1 MB
Events in quadrant A11,989,1432,278,209
Events in quadrant B12,144,4152,423,681
Events in quadrant C15,410,9742,094,249
Events in quadrant D13,743,6642,006,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519783
B0526343
C0625173
D0574257

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234762461.047879%
B234774822.053073%
C234778833.761128%
D234754742.019169%

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 26296 23479 105 105 0.40% 0.45%
B 26297 23480 141 141 0.54% 0.60%
C 26297 23480 699 699 2.66% 2.98%
D 26296 23479 359 359 1.37% 1.53%

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 12 966513 1543.91 2556 2490 624.4
A 3 14 569779 908.53 2556 2490 624.4
A 8 4 396433 630.91 2556 2490 624.4
B 5 185 793932 1465.88 2524 2421 540.0
B 7 252 479328 883.23 2524 2421 540.0
B 0 171 218119 399.47 2524 2421 540.0
C 15 224 4828762 7354.2 2439 2418 656.3
C 14 254 453802 687.8 2439 2418 656.3
C 6 223 244037 368.17 2439 2418 656.3
D 3 224 1688419 2470.14 2443 2334 682.6
D 8 240 1069325 1563.16 2443 2334 682.6
D 2 249 400831 583.8 2443 2334 682.6

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