ASTROSAT CZTI

Data Quality Report

Orbit 35766

Creation date: 2022-07-18T21:56:38.974962
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_058T14_9000005134_35766cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35766cztM0_level2_quad_clean.evt
Size (bytes)484,081,92076,423,680
Size461.7 MB 72.9 MB
Events in quadrant A2,849,177496,834
Events in quadrant B3,302,460498,149
Events in quadrant C3,369,620485,460
Events in quadrant D4,763,284445,972

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118003
B0133332
C0133582
D0177772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553660.108382%
B55361622.926301%
C55361713.088873%
D55364227.622832%

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 9062 5538 0 0 0.00% 0.00%
B 9062 5538 92 92 1.02% 1.66%
C 9062 5538 151 151 1.67% 2.73%
D 9062 5538 518 518 5.72% 9.35%

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 83 157246 1149.49 679 667 136.2
A 15 223 40605 293.2 679 667 136.2
A 13 6 12210 84.74 679 667 136.2
B 5 172 331682 2609.69 666 651 126.8
B 5 255 147366 1156.63 666 651 126.8
B 0 213 124457 976.03 666 651 126.8
C 1 23 475070 3205.32 643 648 148.0
C 15 214 229527 1546.37 643 648 148.0
C 0 10 131063 881.12 643 648 148.0
D 1 52 900683 5777.77 640 623 155.8
D 14 52 679219 4356.12 640 623 155.8
D 13 249 261389 1673.94 640 623 155.8

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