ASTROSAT CZTI

Data Quality Report

Orbit 10451

Creation date: 2024-06-27T15:59:23.636414
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/AS1A03_126T01_9000001512_10451cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10451cztM0_level2_quad_clean.evt
Size (bytes)329,961,60059,042,880
Size314.7 MB 56.3 MB
Events in quadrant A2,347,773316,653
Events in quadrant B2,256,967368,452
Events in quadrant C2,171,262377,668
Events in quadrant D2,913,690413,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224134
B0224123
C0224125
D0212114

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03427625117
B02683317443
C02289813439
D02493913057

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02310
B02613
C02613
D02411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3604802.219756%
B4294691.606893%
C4621180.389526%
D5228310.592961%

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 6829 4433 9 9 0.13% 0.20%
B 6830 5107 9 9 0.13% 0.18%
C 6830 5385 0 0 0.00% 0.00%
D 6830 5527 1 1 0.01% 0.02%

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 13 251 600683 6805.78 431 423 88.2
A 3 80 75482 851.02 431 423 88.2
A 13 253 5277 55.03 431 423 88.2
B 4 239 153830 1531.74 522 509 100.1
B 0 214 32023 314.84 522 509 100.1
B 11 51 16746 162.21 522 509 100.1
C 14 234 6506 46.26 554 558 128.6
C 13 61 4131 27.79 554 558 128.6
C 12 4 1710 8.96 554 558 128.6
D 8 195 356240 2375.95 624 608 149.7
D 1 20 137185 912.46 624 608 149.7
D 2 234 21767 141.36 624 608 149.7

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