ASTROSAT CZTI

Data Quality Report

Orbit 41171

Creation date: 2024-06-27T22:25:28.665756
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/AS1A12_101T04_9000005610_41171cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41171cztM0_level2_quad_clean.evt
Size (bytes)451,935,36076,032,000
Size431.0 MB 72.5 MB
Events in quadrant A2,634,155577,729
Events in quadrant B3,311,095565,461
Events in quadrant C6,953,393350,737
Events in quadrant D3,466,857480,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104372
B0128131
C0238611
D0133801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A467360.128397%
B46732425.178686%
C4673188940.423711%
D46733156.740852%

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 6826 4674 2 2 0.03% 0.04%
B 6826 4674 183 183 2.68% 3.92%
C 6826 4674 1555 1555 22.78% 33.27%
D 6826 4674 287 287 4.20% 6.14%

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 442948 3909.08 554 544 113.2
A 12 189 24554 212.15 554 544 113.2
A 6 10 21009 180.83 554 544 113.2
B 0 186 518791 4988.37 534 521 103.9
B 0 245 475559 4572.26 534 521 103.9
B 5 252 75548 722.14 534 521 103.9
C 9 54 4890954 48845.86 430 433 100.1
C 0 10 209244 2085.58 430 433 100.1
C 15 214 168719 1680.82 430 433 100.1
D 13 249 1104815 8543.8 518 505 129.3
D 2 249 180921 1395.84 518 505 129.3
D 2 16 132505 1021.25 518 505 129.3

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