ASTROSAT CZTI

Data Quality Report

Orbit 53444

Creation date: 2025-08-15T03:40:25.959869
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_002T06_9000006496_53444cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53444cztM0_level2_quad_clean.evt
Size (bytes)702,391,68091,848,960
Size669.9 MB 87.6 MB
Events in quadrant A6,229,423580,197
Events in quadrant B4,381,151705,144
Events in quadrant C9,852,660460,279
Events in quadrant D5,013,951564,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230671
B0175581
C0339251
D0197161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A675598214.537380%
B67551812.679497%
C6755213231.561806%
D67554106.069578%

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 7480 6756 767 767 10.25% 11.35%
B 7480 6756 58 58 0.78% 0.86%
C 7480 6755 1844 1844 24.65% 27.30%
D 7480 6756 372 372 4.97% 5.51%

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 2102217 12620.25 679 665 166.5
A 15 174 1173153 7041.03 679 665 166.5
A 3 14 105655 630.49 679 665 166.5
B 10 254 646259 4212.91 721 697 153.2
B 4 171 366109 2384.67 721 697 153.2
B 15 20 137867 895.17 721 697 153.2
C 9 38 2690871 15295.35 637 631 175.9
C 15 224 2071743 11775.3 637 631 175.9
C 15 178 1085917 6170.39 637 631 175.9
D 2 172 702432 3534.5 694 662 198.5
D 15 171 332815 1672.9 694 662 198.5
D 3 12 311573 1565.92 694 662 198.5

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