ASTROSAT CZTI

Data Quality Report

Orbit 40402

Creation date: 2024-06-27T22:15:38.782289
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_056T02_9000005538_40402cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40402cztM0_level2_quad_clean.evt
Size (bytes)367,208,64095,584,320
Size350.2 MB 91.2 MB
Events in quadrant A3,369,266693,751
Events in quadrant B3,894,881715,320
Events in quadrant C2,824,185679,737
Events in quadrant D3,092,633436,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131523
B0154382
C0114282
D0127852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52761252.369219%
B5276400.758150%
C5276210.398029%
D5276165631.387415%

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 7337 5277 78 78 1.06% 1.48%
B 7337 5277 24 24 0.33% 0.45%
C 7337 5277 10 10 0.14% 0.19%
D 7337 5277 142 142 1.94% 2.69%

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 478598 3674.42 645 635 130.1
A 13 248 369892 2838.72 645 635 130.1
A 9 143 18681 138.73 645 635 130.1
B 7 202 1193271 9965.66 636 621 119.7
B 4 170 164809 1371.94 636 621 119.7
B 0 230 27352 223.36 636 621 119.7
C 15 214 229270 1600.54 623 628 142.9
C 9 54 99256 690.42 623 628 142.9
C 12 249 25389 173.33 623 628 142.9
D 12 227 467152 3804.04 497 484 122.7
D 12 191 306012 2490.51 497 484 122.7
D 13 171 79740 646.06 497 484 122.7

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