ASTROSAT CZTI

Data Quality Report

Orbit 24776

Creation date: 2024-06-27T19:09:46.342155
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_147T01_9000003624_24776cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24776cztM0_level2_quad_clean.evt
Size (bytes)467,593,92088,436,160
Size445.9 MB 84.3 MB
Events in quadrant A3,138,107575,815
Events in quadrant B4,042,581551,892
Events in quadrant C3,200,121550,941
Events in quadrant D3,334,029541,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134352
B0161612
C0135692
D0142512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570230.350076%
B65703675.585997%
C6570610.928463%
D6570450.684932%

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 7595 6571 0 0 0.00% 0.00%
B 7595 6571 245 245 3.23% 3.73%
C 7595 6571 0 0 0.00% 0.00%
D 7595 6571 27 27 0.36% 0.41%

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 13 254 10068 56.36 814 800 164.4
A 3 137 7637 41.58 814 800 164.4
A 0 226 6954 37.42 814 800 164.4
B 3 64 921112 6045.96 786 764 152.2
B 12 111 18702 117.84 786 764 152.2
B 11 111 16884 105.9 786 764 152.2
C 14 238 122042 661.32 779 785 183.4
C 2 16 21371 112.27 779 785 183.4
C 10 91 16320 84.73 779 785 183.4
D 1 52 248009 1294.16 782 760 191.0
D 12 233 40705 209.08 782 760 191.0
D 8 195 37496 192.28 782 760 191.0

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