ASTROSAT CZTI

Data Quality Report

Orbit 56385

Creation date: 2026-03-01T03:48:19.436291
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_083T05_9000006554_56385cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56385cztM0_level2_quad_clean.evt
Size (bytes)2,439,815,040191,370,240
Size2.3 GB 182.5 MB
Events in quadrant A27,908,540983,309
Events in quadrant B10,737,7131,686,882
Events in quadrant C13,006,4981,456,931
Events in quadrant D37,270,159422,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0953603
B0450453
C0517093
D01232053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18035742741.181037%
B1803610836.004657%
C1803614187.862054%
D180361342974.456642%

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 19695 18038 7090 7090 36.00% 39.31%
B 19696 18039 706 706 3.58% 3.91%
C 19696 18039 1183 1183 6.01% 6.56%
D 19696 18039 11238 11238 57.06% 62.30%

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 12 3 11968344 32357.64 1485 1450 369.8
A 3 79 4912135 13278.15 1485 1450 369.8
A 12 194 1541164 4163.28 1485 1450 369.8
B 4 206 1869075 4800.56 1843 1779 389.0
B 5 185 352838 902.52 1843 1779 389.0
B 5 172 307864 786.9 1843 1779 389.0
C 13 3 2221183 4519.18 1785 1773 491.1
C 15 230 1800788 3663.17 1785 1773 491.1
C 6 223 538863 1093.63 1785 1773 491.1
D 8 129 30348142 104824.3 1015 970 289.5
D 12 3 1742270 6014.75 1015 970 289.5
D 2 120 377922 1302.06 1015 970 289.5

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