ASTROSAT CZTI

Data Quality Report

Orbit 30878

Creation date: 2024-06-27T20:20:40.979001
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_071T49_9000004462_30878cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30878cztM0_level2_quad_clean.evt
Size (bytes)892,656,00067,000,320
Size851.3 MB 63.9 MB
Events in quadrant A3,484,227474,688
Events in quadrant B15,724,502182,621
Events in quadrant C3,563,047450,474
Events in quadrant D3,801,647445,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143061
B0512554
C0145701
D0153751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68011151.690928%
B6801648095.280106%
C68011662.440818%
D6801751.102779%

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 7561 6801 7 7 0.09% 0.10%
B 7560 6800 5977 5977 79.06% 87.90%
C 7561 6801 4 4 0.05% 0.06%
D 7561 6801 10 10 0.13% 0.15%

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 0 13 109616 618.77 873 857 175.8
A 13 254 12608 66.86 873 857 175.8
A 3 137 8967 46.14 873 857 175.8
B 6 36 12956887 152604.92 431 421 84.9
B 6 159 983405 11577.86 431 421 84.9
B 4 80 44725 521.83 431 421 84.9
C 14 238 133416 683.72 824 831 193.9
C 3 233 91996 470.12 824 831 193.9
C 0 10 91171 465.87 824 831 193.9
D 8 195 493041 2501.3 832 814 196.8
D 2 250 91705 461.87 832 814 196.8
D 12 233 32867 162.88 832 814 196.8

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