ASTROSAT CZTI

Data Quality Report

Orbit 28756

Creation date: 2024-06-27T19:55:53.602893
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_093T01_9000004128_28756cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28756cztM0_level2_quad_clean.evt
Size (bytes)671,650,56096,667,200
Size640.5 MB 92.2 MB
Events in quadrant A3,393,603645,426
Events in quadrant B3,530,924654,702
Events in quadrant C6,547,648596,271
Events in quadrant D6,407,807555,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145562
B0149582
C0243333
D0237722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6824340.498242%
B6824931.362837%
C68235648.266159%
D682379411.637110%

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 7709 6824 9 9 0.12% 0.13%
B 7709 6824 39 39 0.51% 0.57%
C 7708 6823 175 175 2.27% 2.56%
D 7708 6824 665 665 8.63% 9.75%

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 15 174 137638 834.95 811 794 163.9
A 14 239 111192 673.59 811 794 163.9
A 13 254 13444 77.18 811 794 163.9
B 5 255 266107 1714.76 807 786 154.7
B 4 80 43449 275.73 807 786 154.7
B 10 245 26735 167.71 807 786 154.7
C 3 233 3328564 18584.38 767 773 179.1
C 14 238 148812 826.74 767 773 179.1
C 14 254 37234 203.62 767 773 179.1
D 1 52 2609186 14515.39 749 728 179.7
D 8 195 600014 3334.87 749 728 179.7
D 13 104 217992 1209.02 749 728 179.7

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