ASTROSAT CZTI

Data Quality Report

Orbit 20948

Creation date: 2024-06-27T18:21:33.659218
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_088T05_9000003088_20948cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20948cztM0_level2_quad_clean.evt
Size (bytes)555,307,200103,694,400
Size529.6 MB 98.9 MB
Events in quadrant A3,530,054678,942
Events in quadrant B3,891,103680,849
Events in quadrant C3,510,304648,215
Events in quadrant D5,396,049629,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150172
B0159302
C0149972
D0211212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72241401.937984%
B72252062.851211%
C72251652.283737%
D72252994.138408%

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 7729 7225 0 0 0.00% 0.00%
B 7730 7226 14 14 0.18% 0.19%
C 7730 7226 0 0 0.00% 0.00%
D 7730 7226 127 127 1.64% 1.76%

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 28068 146.81 911 892 185.1
A 0 226 7853 37.61 911 892 185.1
A 3 137 7181 33.98 911 892 185.1
B 7 220 108460 621.13 902 878 173.2
B 3 64 65317 372.04 902 878 173.2
B 4 97 63014 358.74 902 878 173.2
C 14 238 136498 670.36 862 867 202.3
C 13 61 6081 25.77 862 867 202.3
C 10 91 5737 24.07 862 867 202.3
D 1 52 909609 4264.34 877 852 213.1
D 5 222 474754 2223.79 877 852 213.1
D 15 0 389016 1821.46 877 852 213.1

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