ASTROSAT CZTI

Data Quality Report

Orbit 28165

Creation date: 2024-06-27T19:48:45.545164
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/AS1A10_073T05_9000004068_28165cztM0_level2.evt modeM0/AS1A10_073T05_9000004068_28165cztM0_level2_quad_clean.evt
Size (bytes)553,129,920107,634,240
Size527.5 MB 102.6 MB
Events in quadrant A3,125,259720,216
Events in quadrant B3,278,884727,339
Events in quadrant C3,288,024690,646
Events in quadrant D6,605,536654,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138000
B0142090
C0142140
D0243250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695260.388350%
B6695440.657207%
C6695921.374160%
D66946669.949208%

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 7795 6696 0 0 0.00% 0.00%
B 7795 6695 4 4 0.05% 0.06%
C 7795 6695 13 13 0.17% 0.19%
D 7794 6694 565 565 7.25% 8.44%

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 11207 64.41 809 793 161.7
A 3 137 7721 42.85 809 793 161.7
A 0 226 6818 37.27 809 793 161.7
B 10 246 44914 290.35 808 788 152.0
B 10 245 38069 245.31 808 788 152.0
B 12 111 18557 116.92 808 788 152.0
C 14 238 127712 698.88 777 781 181.6
C 3 233 89377 487.81 777 781 181.6
C 2 16 42020 227.06 777 781 181.6
D 1 52 1180274 6523.89 753 733 180.8
D 7 80 1171943 6477.81 753 733 180.8
D 13 104 645480 3566.01 753 733 180.8

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