ASTROSAT CZTI

Data Quality Report

Orbit 19887

Creation date: 2024-06-27T18:08:20.059556
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/AS1T03_118T01_9000002962_19887cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19887cztM0_level2_quad_clean.evt
Size (bytes)451,149,12092,862,720
Size430.2 MB 88.6 MB
Events in quadrant A3,249,995617,223
Events in quadrant B3,449,798623,902
Events in quadrant C3,335,379579,690
Events in quadrant D3,216,830568,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134002
B0140892
C0137452
D0134232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6059290.478627%
B6059821.353359%
C6059671.105793%
D6059290.478627%

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 7399 6060 0 0 0.00% 0.00%
B 7399 6060 6 6 0.08% 0.10%
C 7399 6060 0 0 0.00% 0.00%
D 7399 6060 13 13 0.18% 0.21%

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 0 226 7237 37.94 844 831 168.9
A 3 137 6380 32.86 844 831 168.9
A 12 194 6022 30.74 844 831 168.9
B 0 197 49248 308.77 844 827 156.8
B 7 220 48574 304.48 844 827 156.8
B 4 216 18026 109.68 844 827 156.8
C 14 238 131207 688.41 814 826 189.4
C 9 221 26574 135.95 814 826 189.4
C 13 61 5598 25.2 814 826 189.4
D 1 52 51991 260.13 821 800 196.8
D 5 222 24951 122.72 821 800 196.8
D 2 234 23639 116.06 821 800 196.8

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