ASTROSAT CZTI

Data Quality Report

Orbit 52314

Creation date: 2025-07-22T17:10:55.294615
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/AS1C09_011T05_9000006474_52314cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52314cztM0_level2_quad_clean.evt
Size (bytes)1,125,152,64079,672,320
Size1.0 GB 76.0 MB
Events in quadrant A5,186,204701,106
Events in quadrant B4,961,142752,847
Events in quadrant C14,047,132252,122
Events in quadrant D16,862,320172,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207710
B0201610
C0470110
D0552661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76643344.358038%
B76642653.457724%
C7664516167.340814%
D7663594577.580582%

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 7664 7664 308 308 4.02% 4.02%
B 7664 7664 86 86 1.12% 1.12%
C 7663 7663 3836 3836 50.06% 50.06%
D 7663 7663 5761 5761 75.18% 75.18%

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 7 206 789613 3987.44 791 772 197.8
A 15 239 194191 977.7 791 772 197.8
A 15 250 177506 893.36 791 772 197.8
B 4 171 550753 3280.97 788 763 167.6
B 0 216 492767 2935.05 788 763 167.6
B 0 213 278769 1658.45 788 763 167.6
C 15 178 4437161 39617.7 396 392 112.0
C 0 161 4034641 36023.43 396 392 112.0
C 15 224 3314017 29588.69 396 392 112.0
D 15 93 11792289 90916.24 442 420 129.7
D 12 2 1407352 10847.56 442 420 129.7
D 8 176 275349 2119.72 442 420 129.7

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