ASTROSAT CZTI

Data Quality Report

Orbit 20230515_A12_044T17_9000005636_level2

Creation date: 2023-05-17T15:14:13.845802
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_044T17_9000005636cztM0_level2.fits modeM0/AS1A12_044T17_9000005636cztM0_level2_quad_clean.evt
Size (bytes)256,008,960331,079,040
Size244.1 MB 315.7 MB
Events in quadrant A1,551,4542,173,829
Events in quadrant B1,415,6462,036,879
Events in quadrant C1,466,3701,954,506
Events in quadrant D1,295,5621,839,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06000
B06000
C06000
D06000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0651010
B0785770
C0868440
D0749070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A294211400.475851%
B2942119686.689100%
C2942116035.448489%
D2942110533.579076%

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 39338 29419 0 0 0.00% 0.00%
B 39338 29398 0 0 0.00% 0.00%
C 39338 29400 0 0 0.00% 0.00%
D 39338 29381 0 0 0.00% 0.00%

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 7 110 1281 8.78 404 379 102.7
A 9 19 1274 8.72 404 379 102.7
A 0 29 1197 7.97 404 379 102.7
B 2 9 1255 11.86 375 358 75.7
B 3 80 1054 9.2 375 358 75.7
B 5 128 1010 8.62 375 358 75.7
C 1 81 1297 9.37 387 363 99.6
C 1 80 1198 8.38 387 363 99.6
C 3 202 1182 8.22 387 363 99.6
D 7 3 1016 6.71 371 338 101.0
D 10 113 961 6.17 371 338 101.0
D 12 6 940 5.96 371 338 101.0

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