ASTROSAT CZTI

Data Quality Report

Orbit 41967

Creation date: 2024-06-27T22:35:05.195413
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_025T15_9000005726_41967cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41967cztM0_level2_quad_clean.evt
Size (bytes)320,616,00094,455,360
Size305.8 MB 90.1 MB
Events in quadrant A3,272,280649,040
Events in quadrant B2,606,752675,757
Events in quadrant C2,591,042622,505
Events in quadrant D3,001,456556,715

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130852
B0107402
C0103692
D0122392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5089120.235803%
B5089110.216152%
C508920.039300%
D50891422.790332%

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 7182 5090 3 3 0.04% 0.06%
B 7182 5090 2 2 0.03% 0.04%
C 7182 5090 0 0 0.00% 0.00%
D 7182 5090 112 112 1.56% 2.20%

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 535347 4208.41 624 614 127.1
A 2 79 284151 2231.47 624 614 127.1
A 14 250 31324 241.69 624 614 127.1
B 0 190 132988 1121.2 621 605 118.1
B 0 186 32458 269.77 621 605 118.1
B 12 111 14384 116.7 621 605 118.1
C 15 214 225408 1618.8 598 604 138.9
C 9 54 31553 222.86 598 604 138.9
C 13 61 4147 25.51 598 604 138.9
D 13 249 556735 3857.22 591 575 144.2
D 12 6 91036 627.39 591 575 144.2
D 2 249 29853 203.05 591 575 144.2

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