ASTROSAT CZTI

Data Quality Report

Orbit 53517

Creation date: 2025-08-20T01:30:13.564699
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_004T04_9000006500_53517cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53517cztM0_level2_quad_clean.evt
Size (bytes)791,858,88095,500,800
Size755.2 MB 91.1 MB
Events in quadrant A7,766,751621,609
Events in quadrant B6,221,270663,247
Events in quadrant C9,545,671502,273
Events in quadrant D5,225,769606,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280542
B0234751
C0333111
D0205671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A715094913.272727%
B715086612.111888%
C7151209029.226682%
D71513585.006293%

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 7615 7151 703 703 9.23% 9.83%
B 7615 7151 727 727 9.55% 10.17%
C 7616 7152 1561 1561 20.50% 21.83%
D 7616 7152 290 290 3.81% 4.05%

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 3 62 2263392 12154.8 748 728 186.2
A 3 63 1938853 10411.41 748 728 186.2
A 15 174 297092 1592.04 748 728 186.2
B 5 172 1914635 12095.48 747 722 158.2
B 4 171 596729 3766.62 747 722 158.2
B 5 185 221097 1392.72 747 722 158.2
C 15 224 2567893 13813.62 667 659 185.8
C 1 241 1179070 6340.72 667 659 185.8
C 7 64 1050181 5647.2 667 659 185.8
D 2 249 737476 3395.72 754 720 217.0
D 2 153 477311 2196.62 754 720 217.0
D 2 120 242666 1115.13 754 720 217.0

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