ASTROSAT CZTI

Data Quality Report

Orbit 35503

Creation date: 2022-04-23T00:52:52.227416
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/AS1A11_097T22_9000005082_35503cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35503cztM0_level2_quad_clean.evt
Size (bytes)445,749,12093,306,240
Size425.1 MB 89.0 MB
Events in quadrant A2,785,783609,144
Events in quadrant B3,369,653614,380
Events in quadrant C3,070,921628,373
Events in quadrant D3,894,662583,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120523
B0137592
C0124342
D0153992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5577100.179308%
B55771983.550296%
C55771061.900663%
D55772484.446835%

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 7219 5578 0 0 0.00% 0.00%
B 7219 5578 126 126 1.75% 2.26%
C 7219 5578 64 64 0.89% 1.15%
D 7219 5578 195 195 2.70% 3.50%

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 15 169 157934 1216.63 642 628 129.3
A 10 83 138937 1069.7 642 628 129.3
A 13 254 8029 57.24 642 628 129.3
B 5 172 767836 6315.76 635 617 121.5
B 0 219 32560 262.96 635 617 121.5
B 5 200 16792 133.15 635 617 121.5
C 0 10 281668 1909.31 635 638 147.2
C 15 214 230011 1558.35 635 638 147.2
C 14 67 48092 322.4 635 638 147.2
D 12 217 618781 4092.08 624 605 151.1
D 8 195 180030 1187.72 624 605 151.1
D 10 199 168234 1109.64 624 605 151.1

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