ASTROSAT CZTI

Data Quality Report

Orbit 35962

Creation date: 2022-06-09T06:08:59.895656
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_080T01_9000005146_35962cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35962cztM0_level2_quad_clean.evt
Size (bytes)1,063,108,80080,305,920
Size1013.9 MB 76.6 MB
Events in quadrant A4,112,326645,214
Events in quadrant B15,202,634262,255
Events in quadrant C8,496,481494,993
Events in quadrant D3,977,239602,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160863
B0493082
C0292222
D0157192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6077991.629093%
B6077604199.407602%
C6077223636.794471%
D60771602.632878%

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 8851 6079 56 56 0.63% 0.92%
B 8851 6078 5839 5839 65.97% 96.07%
C 8851 6078 1935 1935 21.86% 31.84%
D 8851 6079 128 128 1.45% 2.11%

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 1080935 7150.05 734 721 151.1
A 10 83 181338 1195.52 734 721 151.1
A 13 254 9401 57.45 734 721 151.1
B 5 31 4288757 63528.43 339 331 67.5
B 5 15 4275871 63337.54 339 331 67.5
B 5 14 4254945 63027.54 339 331 67.5
C 9 187 3519846 26963.35 557 563 130.5
C 0 207 2452520 18785.92 557 563 130.5
C 15 214 203928 1558.1 557 563 130.5
D 8 195 340543 1954.21 707 688 173.9
D 2 249 163575 936.62 707 688 173.9
D 7 223 146592 838.97 707 688 173.9

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