ASTROSAT CZTI

Data Quality Report

Orbit 14830

Creation date: 2024-06-27T17:00:21.578130
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_028T01_9000002190_14830cztM0_level2.evt modeM0/AS1G08_028T01_9000002190_14830cztM0_level2_quad_clean.evt
Size (bytes)506,122,560107,524,800
Size482.7 MB 102.5 MB
Events in quadrant A3,740,300696,374
Events in quadrant B3,835,977694,416
Events in quadrant C3,783,212677,914
Events in quadrant D3,459,211665,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156363
B0161122
C0156762
D0155242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7499670.893452%
B74991301.733564%
C7499510.680091%
D7499590.786772%

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 8895 7502 0 0 0.00% 0.00%
B 8895 7502 15 15 0.17% 0.20%
C 8895 7502 0 0 0.00% 0.00%
D 8895 7502 10 10 0.11% 0.13%

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 12 189 204288 1088.64 916 895 186.8
A 0 226 7968 37.86 916 895 186.8
A 12 194 6678 30.95 916 895 186.8
B 3 64 179907 1008.8 911 889 177.5
B 0 219 35918 197.4 911 889 177.5
B 12 111 21583 116.62 911 889 177.5
C 3 233 317481 1541.89 884 890 205.3
C 6 96 14311 65.36 884 890 205.3
C 13 61 6273 26.22 884 890 205.3
D 13 249 36935 167.38 887 859 215.5
D 7 254 34394 155.59 887 859 215.5
D 2 234 27406 123.17 887 859 215.5

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