ASTROSAT CZTI

Data Quality Report

Orbit 37505

Creation date: 2024-06-27T21:40:52.783798
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/AS1A11_030T02_9000005328_37505cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37505cztM0_level2_quad_clean.evt
Size (bytes)393,019,20077,483,520
Size374.8 MB 73.9 MB
Events in quadrant A2,534,963531,582
Events in quadrant B2,953,081516,844
Events in quadrant C2,835,467516,249
Events in quadrant D3,280,496472,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011206928
B0130921521
C0125561488
D0145281836

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0986
B0991
C0986
D0983

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4434160.360848%
B43642205.041247%
C43851082.462942%
D42841393.244631%

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 6975 4792 4 4 0.06% 0.08%
B 6975 4740 172 172 2.47% 3.63%
C 6975 4773 85 85 1.22% 1.78%
D 6975 4721 115 115 1.65% 2.44%

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 253235 2293.45 544 534 110.2
A 15 222 128758 1163.73 544 534 110.2
A 13 6 20937 185.17 544 534 110.2
B 5 172 689970 6848.5 528 516 100.7
B 5 255 66327 653.72 528 516 100.7
B 0 190 43253 424.52 528 516 100.7
C 14 254 469673 3790.24 530 535 123.8
C 15 214 187513 1510.62 530 535 123.8
C 0 10 103297 830.23 530 535 123.8
D 1 52 841837 6755.5 509 496 124.5
D 13 249 170680 1366.48 509 496 124.5
D 2 153 123348 986.43 509 496 124.5

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