ASTROSAT CZTI

Data Quality Report

Orbit 28571

Creation date: 2024-06-27T19:53:28.317361
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_110T01_9000004104_28571cztM0_level2.evt modeM0/AS1A10_110T01_9000004104_28571cztM0_level2_quad_clean.evt
Size (bytes)577,984,32067,884,480
Size551.2 MB 64.7 MB
Events in quadrant A3,091,562428,324
Events in quadrant B3,492,908430,394
Events in quadrant C3,201,484416,161
Events in quadrant D7,315,124364,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128181
B0140531
C0130471
D0257741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5950731.226891%
B59501572.638655%
C59501061.781513%
D5950134822.655462%

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 7095 5950 1 1 0.01% 0.02%
B 7095 5950 58 58 0.82% 0.97%
C 7095 5950 6 6 0.08% 0.10%
D 7094 5949 1245 1245 17.55% 20.93%

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 10 67 10504 60.57 798 783 160.5
A 13 254 9102 51.83 798 783 160.5
A 3 137 7344 40.88 798 783 160.5
B 4 171 345998 2303.61 782 764 149.9
B 15 33 40394 264.44 782 764 149.9
B 12 111 17972 114.82 782 764 149.9
C 14 238 124438 688.01 767 773 179.7
C 7 247 80332 442.63 767 773 179.7
C 0 10 6069 29.46 767 773 179.7
D 1 52 3839471 22676.93 706 687 169.3
D 8 195 473251 2791.59 706 687 169.3
D 2 250 297651 1754.26 706 687 169.3

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