ASTROSAT CZTI

Data Quality Report

Orbit 20160328_T01_105T01_9000000402_level2

Creation date: 2025-10-28T21:26:47.420959
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/AS1T01_105T01_9000000402cztM0_level2.fits modeM0/AS1T01_105T01_9000000402cztM0_level2_quad_clean.evt
Size (bytes)257,918,400253,676,160
Size246.0 MB 241.9 MB
Events in quadrant A1,534,2181,466,434
Events in quadrant B1,482,3181,487,387
Events in quadrant C1,529,8661,453,000
Events in quadrant D1,296,7621,307,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593090
B0714410
C0596990
D0656630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286175862.047734%
B2861710943.822902%
C286173721.299927%
D286177292.547437%

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 34937 28618 0 0 0.00% 0.00%
B 34937 28618 0 0 0.00% 0.00%
C 34937 28618 0 0 0.00% 0.00%
D 34937 28612 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 0 29 1364 9.35 397 368 106.5
A 7 110 1319 8.93 397 368 106.5
A 9 19 1147 7.31 397 368 106.5
B 2 9 1263 11.23 389 368 79.7
B 12 226 1143 9.72 389 368 79.7
B 14 254 1023 8.22 389 368 79.7
C 7 111 1104 6.63 404 371 110.6
C 3 63 1053 6.17 404 371 110.6
C 3 158 1020 5.87 404 371 110.6
D 3 14 960 5.99 370 335 104.3
D 7 3 940 5.8 370 335 104.3
D 7 5 935 5.75 370 335 104.3

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