ASTROSAT CZTI

Data Quality Report

Orbit 15449

Creation date: 2024-06-27T17:08:39.032430
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/AS1G08_032T01_9000002280_15449cztM0_level2.evt modeM0/AS1G08_032T01_9000002280_15449cztM0_level2_quad_clean.evt
Size (bytes)513,365,760104,696,640
Size489.6 MB 99.8 MB
Events in quadrant A3,686,714668,669
Events in quadrant B3,633,919683,270
Events in quadrant C3,960,865664,518
Events in quadrant D3,759,479635,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161403
B0158422
C0165152
D0165302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7455971.301140%
B7455660.885312%
C7455260.348759%
D74551271.703555%

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 7771 7457 36 36 0.46% 0.48%
B 7771 7457 3 3 0.04% 0.04%
C 7771 7457 0 0 0.00% 0.00%
D 7771 7457 52 52 0.67% 0.70%

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 14 238 158963 874.71 886 867 180.7
A 14 237 67543 368.91 886 867 180.7
A 9 143 24814 132.49 886 867 180.7
B 0 189 42210 239.11 892 867 172.9
B 0 197 33357 187.91 892 867 172.9
B 12 111 20255 112.13 892 867 172.9
C 3 233 547276 2688.51 871 875 203.2
C 8 128 11407 51.82 871 875 203.2
C 13 61 6149 25.95 871 875 203.2
D 5 222 179748 851.95 863 837 210.0
D 7 38 143062 677.25 863 837 210.0
D 10 70 37681 175.44 863 837 210.0

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