ASTROSAT CZTI

Data Quality Report

Orbit 11698

Creation date: 2024-06-27T16:17:04.447771
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/AS1A04_227T01_9000001724_11698cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11698cztM0_level2_quad_clean.evt
Size (bytes)909,987,84078,577,920
Size867.8 MB 74.9 MB
Events in quadrant A6,113,767511,489
Events in quadrant B4,713,290517,208
Events in quadrant C3,388,743546,472
Events in quadrant D12,852,702297,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231503
B0185122
C0149582
D0430292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A726875810.429279%
B72684886.714364%
C7268781.073198%
D7268412656.769400%

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 7784 7269 323 323 4.15% 4.44%
B 7784 7270 136 136 1.75% 1.87%
C 7784 7270 0 0 0.00% 0.00%
D 7784 7270 3833 3833 49.24% 52.72%

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 8 5 2222692 12670.61 860 840 175.4
A 1 162 222370 1263.32 860 840 175.4
A 1 178 118830 672.86 860 840 175.4
B 4 239 555603 3314.71 867 842 167.4
B 3 64 334433 1993.22 867 842 167.4
B 10 244 264558 1575.71 867 842 167.4
C 13 61 6350 27.31 867 871 200.7
C 12 4 5642 23.78 867 871 200.7
C 3 202 2128 6.26 867 871 200.7
D 13 152 9956617 73241.6 561 544 135.9
D 10 157 316519 2324.46 561 544 135.9
D 8 195 219790 1612.88 561 544 135.9

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