ASTROSAT CZTI

Data Quality Report

Orbit 39667

Creation date: 2024-06-27T22:07:31.274345
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_051T01_9000005490_39667cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39667cztM0_level2_quad_clean.evt
Size (bytes)437,356,80084,510,720
Size417.1 MB 80.6 MB
Events in quadrant A4,639,393576,688
Events in quadrant B2,690,384601,751
Events in quadrant C4,644,883517,018
Events in quadrant D3,804,544493,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174893
B0116612
C0171952
D0150082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52812164.090134%
B5281851.609544%
C528166712.630184%
D52813927.422837%

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 7074 5282 185 185 2.62% 3.50%
B 7074 5282 54 54 0.76% 1.02%
C 7074 5282 591 591 8.35% 11.19%
D 7074 5282 361 361 5.10% 6.83%

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 1399604 12044.28 565 554 116.2
A 15 174 600864 5168.01 565 554 116.2
A 10 83 440589 3788.22 565 554 116.2
B 5 172 285082 2544.74 575 558 111.8
B 5 255 75507 670.33 575 558 111.8
B 15 32 28776 252.38 575 558 111.8
C 15 208 1970526 15549.66 538 541 126.7
C 9 187 272433 2146.12 538 541 126.7
C 15 214 226328 1782.2 538 541 126.7
D 12 233 691882 5142.62 543 527 134.4
D 13 174 530056 3938.89 543 527 134.4
D 13 249 183347 1359.9 543 527 134.4

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