ASTROSAT CZTI

Data Quality Report

Orbit 57260

Creation date: 2026-04-28T22:08:40.761625
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_57260cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57260cztM0_level2_quad_clean.evt
Size (bytes)372,988,80085,003,200
Size355.7 MB 81.1 MB
Events in quadrant A2,705,403566,651
Events in quadrant B2,735,879599,391
Events in quadrant C4,981,199494,485
Events in quadrant D2,926,610502,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124121
B0125271
C0190391
D0130141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5878320.544403%
B5878851.446070%
C58785879.986390%
D5878771.309969%

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 6948 5878 2 2 0.03% 0.03%
B 6948 5878 32 32 0.46% 0.54%
C 6948 5878 556 556 8.00% 9.46%
D 6948 5878 56 56 0.81% 0.95%

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 3 14 135135 866.97 626 611 155.2
A 7 64 91182 583.71 626 611 155.2
A 4 249 43298 275.11 626 611 155.2
B 7 252 98189 739.76 612 590 131.9
B 10 16 88140 663.6 612 590 131.9
B 10 247 66394 498.77 612 590 131.9
C 15 224 2444128 15461.83 572 565 158.0
C 14 254 169153 1066.75 572 565 158.0
C 14 246 73967 464.46 572 565 158.0
D 2 249 176295 1031.38 597 569 170.4
D 8 240 110200 643.45 597 569 170.4
D 5 173 43849 254.02 597 569 170.4

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