ASTROSAT CZTI

Data Quality Report

Orbit 31842

Creation date: 2024-06-27T20:33:23.267944
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_109T01_9000004646_31842cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31842cztM0_level2_quad_clean.evt
Size (bytes)526,078,08072,725,760
Size501.7 MB 69.4 MB
Events in quadrant A3,314,200452,946
Events in quadrant B5,046,693448,751
Events in quadrant C3,685,559428,770
Events in quadrant D3,449,877422,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136732
B0196472
C0147392
D0139562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437490.761224%
B64371031.600124%
C64372093.246854%
D6437470.730154%

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 7512 6438 0 0 0.00% 0.00%
B 7512 6438 1 1 0.01% 0.02%
C 7512 6438 54 54 0.72% 0.84%
D 7512 6438 13 13 0.17% 0.20%

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 13 254 10379 56.29 858 844 169.4
A 3 137 8578 45.66 858 844 169.4
A 0 226 7037 36.56 858 844 169.4
B 6 159 1691025 10566.56 840 819 160.0
B 10 245 46729 287.01 840 819 160.0
B 12 111 20082 120.42 840 819 160.0
C 0 10 297811 1593.32 800 807 186.4
C 14 238 145904 778.39 800 807 186.4
C 3 233 53832 284.46 800 807 186.4
D 8 195 210513 1077.19 819 799 194.7
D 2 250 75074 381.51 819 799 194.7
D 12 233 37362 187.81 819 799 194.7

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