ASTROSAT CZTI

Data Quality Report

Orbit 53749

Creation date: 2025-09-04T17:17:44.642338
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_022T04_9000006506_53749cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53749cztM0_level2_quad_clean.evt
Size (bytes)1,126,200,96068,924,160
Size1.0 GB 65.7 MB
Events in quadrant A17,224,3226,617
Events in quadrant B5,074,846637,189
Events in quadrant C11,537,692381,601
Events in quadrant D7,310,003572,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559887
B0199942
C0391352
D0266642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7014696299.258626%
B701480811.519818%
C7015307143.777619%
D70154406.272274%

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 7633 7013 6309 6309 82.65% 89.96%
B 7634 7016 558 558 7.31% 7.95%
C 7635 7015 2719 2719 35.61% 38.76%
D 7635 7016 420 420 5.50% 5.99%

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 63 11880358 241406.13 193 188 49.2
A 3 78 4432523 90065.45 193 188 49.2
A 8 249 31905 644.49 193 188 49.2
B 6 255 1738288 11662.78 696 672 149.0
B 5 185 190174 1271.93 696 672 149.0
B 4 81 129806 866.74 696 672 149.0
C 15 224 3872834 25140.53 559 555 154.0
C 1 241 2234310 14502.52 559 555 154.0
C 13 3 1701862 11045.63 559 555 154.0
D 2 172 3086195 15479.61 701 673 199.3
D 8 176 625922 3136.78 701 673 199.3
D 13 153 267177 1337.01 701 673 199.3

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