ASTROSAT CZTI

Data Quality Report

Orbit 39981

Creation date: 2024-06-27T22:10:52.807310
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_054T03_9000005516_39981cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39981cztM0_level2_quad_clean.evt
Size (bytes)318,421,44095,639,040
Size303.7 MB 91.2 MB
Events in quadrant A2,899,805645,274
Events in quadrant B2,809,236671,539
Events in quadrant C2,701,034635,905
Events in quadrant D2,960,592569,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119243
B0119012
C0113092
D0126122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341150.280846%
B5341541.011047%
C5341380.711477%
D53411031.928478%

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 7314 5342 12 12 0.16% 0.22%
B 7314 5342 23 23 0.31% 0.43%
C 7314 5342 32 32 0.44% 0.60%
D 7314 5342 103 103 1.41% 1.93%

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 451647 3690.1 602 591 122.2
A 6 10 109824 893.64 602 591 122.2
A 13 254 10977 84.97 602 591 122.2
B 4 171 358539 3077.14 606 591 116.3
B 5 255 31672 267.19 606 591 116.3
B 0 221 16098 133.31 606 591 116.3
C 15 214 223296 1619.69 591 596 137.5
C 0 10 130455 944.46 591 596 137.5
C 14 254 23667 167.79 591 596 137.5
D 2 250 269959 1901.81 577 561 141.7
D 13 171 194212 1367.08 577 561 141.7
D 1 47 115594 812.07 577 561 141.7

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