ASTROSAT CZTI

Data Quality Report

Orbit 24767

Creation date: 2024-06-27T19:09:39.583021
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/AS1A07_147T01_9000003624_24767cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24767cztM0_level2_quad_clean.evt
Size (bytes)524,327,04079,159,680
Size500.0 MB 75.5 MB
Events in quadrant A3,611,962502,209
Events in quadrant B4,204,717501,505
Events in quadrant C3,619,039471,748
Events in quadrant D4,000,455465,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144662
B0164742
C0145152
D0158892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536941.438188%
B65362183.335373%
C65361271.943084%
D6536691.055692%

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 7816 6537 0 0 0.00% 0.00%
B 7816 6537 67 67 0.86% 1.02%
C 7816 6537 0 0 0.00% 0.00%
D 7816 6537 19 19 0.24% 0.29%

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 13 254 8941 43.66 935 921 183.7
A 0 226 8004 38.56 935 921 183.7
A 3 137 7876 37.86 935 921 183.7
B 3 64 576791 3364.45 913 896 171.2
B 0 230 27324 154.4 913 896 171.2
B 12 111 20679 115.57 913 896 171.2
C 14 238 141691 700.47 872 880 201.0
C 7 247 71421 350.91 872 880 201.0
C 13 61 6090 25.92 872 880 201.0
D 8 195 503750 2377.12 887 866 211.6
D 12 233 113268 531.32 887 866 211.6
D 1 52 38653 178.62 887 866 211.6

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