ASTROSAT CZTI

Data Quality Report

Orbit 21929

Creation date: 2024-06-27T18:34:05.518152
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/AS1A07_100T03_9000003242_21929cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21929cztM0_level2_quad_clean.evt
Size (bytes)486,789,120124,922,880
Size464.2 MB 119.1 MB
Events in quadrant A4,033,289851,106
Events in quadrant B2,966,286877,632
Events in quadrant C3,049,617859,488
Events in quadrant D4,316,923806,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156691
B0123751
C0125721
D0166461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55462163.894699%
B55451152.073940%
C55451512.723174%
D55454077.339946%

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 6896 5546 83 83 1.20% 1.50%
B 6895 5545 6 6 0.09% 0.11%
C 6895 5545 13 13 0.19% 0.23%
D 6895 5545 283 283 4.10% 5.10%

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 15 236 1195349 8190.15 735 721 145.9
A 13 254 9920 63.07 735 721 145.9
A 0 226 6608 40.36 735 721 145.9
B 3 64 49513 361.15 737 719 135.1
B 0 190 19621 139.9 737 719 135.1
B 12 111 14876 104.78 737 719 135.1
C 14 238 115901 691.38 728 733 166.6
C 10 22 95274 567.55 728 733 166.6
C 13 61 5150 26.52 728 733 166.6
D 1 52 715149 4163.77 716 697 171.6
D 12 235 667031 3883.34 716 697 171.6
D 11 176 112428 651.16 716 697 171.6

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