ASTROSAT CZTI

Data Quality Report

Orbit 37443

Creation date: 2024-06-27T21:40:03.024285
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_002T01_9000005322_37443cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37443cztM0_level2_quad_clean.evt
Size (bytes)600,056,64075,637,440
Size572.3 MB 72.1 MB
Events in quadrant A4,114,409491,421
Events in quadrant B5,736,600439,891
Events in quadrant C4,170,401480,784
Events in quadrant D3,773,340486,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159583
B0209242
C0159572
D0151192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55743957.086473%
B5574112820.236814%
C55745139.203445%
D55742474.431288%

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 7157 5575 358 358 5.00% 6.42%
B 7156 5574 933 933 13.04% 16.74%
C 7157 5575 461 461 6.44% 8.27%
D 7157 5575 257 257 3.59% 4.61%

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 15 222 1392892 11173.32 611 599 124.6
A 10 83 297496 2382.63 611 599 124.6
A 13 6 29453 231.56 611 599 124.6
B 15 35 2710197 24793.89 564 549 109.3
B 0 197 143729 1310.13 564 549 109.3
B 0 189 143454 1307.61 564 549 109.3
C 14 254 1345318 9953.61 576 581 135.1
C 0 10 306827 2266.8 576 581 135.1
C 15 214 240966 1779.31 576 581 135.1
D 2 153 385034 2649.22 594 577 145.1
D 13 249 355784 2447.66 594 577 145.1
D 2 249 154644 1061.64 594 577 145.1

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