ASTROSAT CZTI

Data Quality Report

Orbit 53061

Creation date: 2025-07-20T08:15:26.836858
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_011T07_9000006488_53061cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53061cztM0_level2_quad_clean.evt
Size (bytes)824,846,40080,962,560
Size786.6 MB 77.2 MB
Events in quadrant A4,988,969600,824
Events in quadrant B4,976,813630,308
Events in quadrant C13,636,409232,776
Events in quadrant D6,420,937527,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195091
B0194361
C0450261
D0236852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65894446.738504%
B65905117.754173%
C6590433865.827011%
D658971410.836242%

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 7624 6590 357 357 4.68% 5.42%
B 7625 6591 344 344 4.51% 5.22%
C 7625 6591 3990 3990 52.33% 60.54%
D 7624 6590 599 599 7.86% 9.09%

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 1099527 6689.14 659 642 164.3
A 9 191 619193 3765.25 659 642 164.3
A 0 8 223153 1354.47 659 642 164.3
B 1 255 1077510 7747.01 651 630 139.0
B 10 63 479166 3442.56 651 630 139.0
B 10 254 403190 2895.99 651 630 139.0
C 1 241 9123666 76027.72 434 428 120.0
C 15 224 1636018 13630.05 434 428 120.0
C 15 244 498766 4152.86 434 428 120.0
D 12 17 1034217 5721.18 625 598 180.7
D 11 245 673175 3722.78 625 598 180.7
D 15 78 543839 3006.89 625 598 180.7

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