ASTROSAT CZTI

Data Quality Report

Orbit 20260712_A14_045T01_9000006590_level2

Creation date: 2026-07-30T16:51:07.820339
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_045T01_9000006590cztM0_level2.fits modeM0/AS1A14_045T01_9000006590cztM0_level2_quad_clean.evt
Size (bytes)3,630,061,4401,231,303,680
Size3.4 GB 1.1 GB
Events in quadrant A21,988,1302,173,626
Events in quadrant B19,200,0042,162,627
Events in quadrant C21,090,7521,955,929
Events in quadrant D18,490,0281,849,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086340
B086340
C086340
D086340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010352920
B013854440
C011028020
D011544220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05290
D05300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A425156152213.580098%
B4251536560315.430445%
C425157210004.939352%
D425159167423.937821%

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 516575 425068 0 0 0.00% 0.00%
B 516575 423004 0 0 0.00% 0.00%
C 516576 424926 0 0 0.00% 0.00%
D 516576 424940 0 0 0.00% 0.00%

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 14 188 25339 10.39 5791 5326 1925.7
A 14 204 21019 8.15 5791 5326 1925.7
A 14 95 18440 6.81 5791 5326 1925.7
B 2 9 22265 14.86 5077 4791 1175.8
B 2 8 19665 12.65 5077 4791 1175.8
B 3 25 15987 9.52 5077 4791 1175.8
C 7 221 17259 6.28 5628 5086 1937.5
C 2 31 16794 6.04 5628 5086 1937.5
C 15 127 16538 5.91 5628 5086 1937.5
D 6 218 22226 9.92 5273 4680 1769.3
D 15 11 17777 7.4 5273 4680 1769.3
D 8 12 17216 7.08 5273 4680 1769.3

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