ASTROSAT CZTI

Data Quality Report

Orbit 31495

Creation date: 2024-06-27T20:29:13.617096
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/AS1T04_028T01_9000004584_31495cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31495cztM0_level2_quad_clean.evt
Size (bytes)616,924,80091,319,040
Size588.3 MB 87.1 MB
Events in quadrant A3,350,055602,951
Events in quadrant B5,252,023608,909
Events in quadrant C3,487,905572,875
Events in quadrant D6,161,377534,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140882
B0200902
C0143402
D0225883

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400520.812500%
B64001282.000000%
C64002133.328125%
D63995148.032505%

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 7540 6401 15 15 0.20% 0.23%
B 7540 6400 28 28 0.37% 0.44%
C 7540 6400 110 110 1.46% 1.72%
D 7539 6400 754 754 10.00% 11.78%

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 240452 1469.32 806 791 163.1
A 13 254 12572 72.22 806 791 163.1
A 3 137 8180 45.3 806 791 163.1
B 6 159 1809830 11835.93 802 782 152.8
B 5 172 77377 501.13 802 782 152.8
B 15 33 62432 403.35 802 782 152.8
C 0 10 317634 1772.15 760 765 178.8
C 14 238 122914 683.14 760 765 178.8
C 12 249 41039 225.24 760 765 178.8
D 8 195 2907043 16053.22 757 735 181.0
D 12 233 211561 1164.51 757 735 181.0
D 13 249 55853 304.45 757 735 181.0

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