ASTROSAT CZTI

Data Quality Report

Orbit 18108

Creation date: 2024-06-27T17:45:02.510860
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_019T01_9000002688_18108cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18108cztM0_level2_quad_clean.evt
Size (bytes)573,215,040110,249,280
Size546.7 MB 105.1 MB
Events in quadrant A3,322,261767,096
Events in quadrant B3,487,150767,437
Events in quadrant C3,214,005708,021
Events in quadrant D6,910,419657,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137502
B0142132
C0133253
D0249302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62861221.940821%
B62861392.211263%
C62851342.132060%
D628599615.847255%

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 7561 6287 1 1 0.01% 0.02%
B 7561 6287 21 21 0.28% 0.33%
C 7560 6285 0 0 0.00% 0.00%
D 7560 6286 788 788 10.42% 12.54%

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 15 174 36193 210.55 851 835 167.9
A 4 2 16607 93.92 851 835 167.9
A 0 226 7677 40.74 851 835 167.9
B 7 220 143550 909.75 836 816 156.9
B 3 64 28693 177.68 836 816 156.9
B 0 189 22381 137.45 836 816 156.9
C 14 238 127387 697.82 788 796 181.4
C 3 233 7047 34.46 788 796 181.4
C 13 61 5432 25.56 788 796 181.4
D 7 238 1436954 7786.01 770 749 184.5
D 11 176 1373158 7440.16 770 749 184.5
D 10 70 636003 3443.86 770 749 184.5

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