ASTROSAT CZTI

Data Quality Report

Orbit 21602

Creation date: 2024-06-27T18:30:05.618386
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/AS1A05_094T01_9000003204_21602cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21602cztM0_level2_quad_clean.evt
Size (bytes)561,859,20080,827,200
Size535.8 MB 77.1 MB
Events in quadrant A3,379,781497,116
Events in quadrant B3,560,974500,185
Events in quadrant C3,397,982483,993
Events in quadrant D6,183,644459,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147481
B0151011
C0147281
D0232931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7274560.769865%
B7275710.975945%
C72751011.388316%
D72756829.374570%

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 7694 7275 0 0 0.00% 0.00%
B 7695 7276 2 2 0.03% 0.03%
C 7695 7276 0 0 0.00% 0.00%
D 7695 7276 558 558 7.25% 7.67%

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 10074 51.82 877 858 177.9
A 3 137 7698 38.46 877 858 177.9
A 0 226 7640 38.13 877 858 177.9
B 0 190 61462 363.53 867 845 166.7
B 0 229 30302 176.66 867 845 166.7
B 0 197 29272 170.48 867 845 166.7
C 14 238 132131 664.35 836 839 197.6
C 13 61 5899 25.6 836 839 197.6
C 10 91 3431 13.12 836 839 197.6
D 1 52 2729672 13496.83 830 803 202.2
D 2 136 116979 574.6 830 803 202.2
D 7 38 76275 373.28 830 803 202.2

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