ASTROSAT CZTI

Data Quality Report

Orbit 54074

Creation date: 2025-09-26T14:35:09.649689
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_041T01_9000006510_54074cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54074cztM0_level2_quad_clean.evt
Size (bytes)753,376,320131,607,360
Size718.5 MB 125.5 MB
Events in quadrant A5,453,884865,141
Events in quadrant B5,029,630962,045
Events in quadrant C8,841,236726,823
Events in quadrant D7,816,526762,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233910
B0220840
C0331300
D0300120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96234344.510028%
B96242882.992519%
C9624159516.573150%
D96246376.618869%

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 9623 9623 343 343 3.56% 3.56%
B 9624 9624 133 133 1.38% 1.38%
C 9623 9623 1601 1601 16.64% 16.64%
D 9624 9624 637 637 6.62% 6.62%

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 15 174 1050366 4248.01 1006 982 247.0
A 0 8 243873 983.25 1006 982 247.0
A 14 235 97702 391.53 1006 982 247.0
B 5 236 306534 1405.85 1017 982 217.3
B 5 185 195705 895.92 1017 982 217.3
B 10 28 161886 740.32 1017 982 217.3
C 15 233 4256935 16777.85 928 919 253.7
C 1 60 526564 2072.17 928 919 253.7
C 14 254 86687 338.11 928 919 253.7
D 2 172 2141676 7778.07 973 931 275.2
D 12 2 656287 2381.14 973 931 275.2
D 3 12 286504 1037.58 973 931 275.2

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