ASTROSAT CZTI

Data Quality Report

Orbit 19401

Creation date: 2024-06-27T18:02:29.409438
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/AS1T03_105T01_9000002876_19401cztM0_level2.evt modeM0/AS1T03_105T01_9000002876_19401cztM0_level2_quad_clean.evt
Size (bytes)854,712,00097,672,320
Size815.1 MB 93.1 MB
Events in quadrant A3,712,385648,707
Events in quadrant B3,920,469649,612
Events in quadrant C3,678,542635,776
Events in quadrant D14,056,866491,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161112
B0166972
C0159322
D0470102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7631730.956624%
B76311271.664264%
C76311281.677369%
D7631460360.319748%

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 7951 7632 17 17 0.21% 0.22%
B 7951 7631 37 37 0.47% 0.48%
C 7951 7631 2 2 0.03% 0.03%
D 7951 7631 3803 3803 47.83% 49.84%

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 5 16 135195 714.24 925 905 188.0
A 13 254 12297 60.59 925 905 188.0
A 0 226 7937 37.4 925 905 188.0
B 15 201 85871 482.61 921 897 176.1
B 0 197 76402 428.83 921 897 176.1
B 4 216 57607 322.08 921 897 176.1
C 14 238 139504 660.57 892 896 209.8
C 3 233 27094 124.85 892 896 209.8
C 0 207 24468 112.34 892 896 209.8
D 10 66 10963660 69674.09 645 627 157.3
D 1 52 430524 2732.15 645 627 157.3
D 7 238 73198 461.22 645 627 157.3

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