ASTROSAT CZTI

Data Quality Report

Orbit 32194

Creation date: 2024-06-27T20:37:27.672101
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/AS1A09_131T01_9000004690_32194cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32194cztM0_level2_quad_clean.evt
Size (bytes)485,714,880103,608,000
Size463.2 MB 98.8 MB
Events in quadrant A3,122,490687,706
Events in quadrant B4,656,069704,511
Events in quadrant C3,369,710676,657
Events in quadrant D3,163,773658,959

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129692
B0180641
C0136691
D0133371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5865881.500426%
B58651071.824382%
C58652233.802217%
D5865510.869565%

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 7140 5866 49 49 0.69% 0.84%
B 7140 5866 7 7 0.10% 0.12%
C 7140 5866 36 36 0.50% 0.61%
D 7140 5866 30 30 0.42% 0.51%

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 329107 2300.84 719 708 142.7
A 13 6 11271 74.01 719 708 142.7
A 13 254 11254 73.89 719 708 142.7
B 6 159 1682262 12499.57 720 703 134.5
B 0 229 87679 646.52 720 703 134.5
B 5 172 22849 164.62 720 703 134.5
C 0 10 422608 2667.8 684 688 158.2
C 14 238 145888 918.1 684 688 158.2
C 14 254 46404 289.06 684 688 158.2
D 8 195 279848 1720.76 688 670 162.2
D 12 233 147130 902.73 688 670 162.2
D 12 218 36408 220.28 688 670 162.2

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