ASTROSAT CZTI

Data Quality Report

Orbit 38476

Creation date: 2024-06-27T21:53:16.266173
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_018T01_9000005386_38476cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38476cztM0_level2_quad_clean.evt
Size (bytes)399,735,36091,056,960
Size381.2 MB 86.8 MB
Events in quadrant A2,789,171661,681
Events in quadrant B4,145,577626,373
Events in quadrant C2,514,942616,529
Events in quadrant D4,962,356505,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111563
B0156642
C0102632
D0179772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4948150.303153%
B49484008.084074%
C494890.181892%
D494876215.400162%

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 7041 4949 3 3 0.04% 0.06%
B 7041 4948 334 334 4.74% 6.75%
C 7041 4949 6 6 0.09% 0.12%
D 7041 4949 713 713 10.13% 14.41%

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 384436 3217.86 598 586 119.3
A 13 248 50471 418.19 598 586 119.3
A 13 6 17543 142.15 598 586 119.3
B 8 3 1433809 13817.28 559 546 103.7
B 4 232 196412 1888.23 559 546 103.7
B 0 183 101271 971.03 559 546 103.7
C 15 214 208004 1592.09 570 574 130.3
C 14 254 41833 316.68 570 574 130.3
C 0 10 23132 173.14 570 574 130.3
D 2 16 1592679 12152.82 542 528 131.0
D 13 249 573873 4376.32 542 528 131.0
D 12 233 192245 1463.37 542 528 131.0

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