ASTROSAT CZTI

Data Quality Report

Orbit 41591

Creation date: 2024-06-27T22:30:28.886373
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/AS1C07_001T10_9000005678_41591cztM0_level2.fits modeM0/AS1C07_001T10_9000005678_41591cztM0_level2_quad_clean.evt
Size (bytes)316,935,36086,371,200
Size302.3 MB 82.4 MB
Events in quadrant A2,614,572585,187
Events in quadrant B2,730,367601,607
Events in quadrant C2,792,658565,304
Events in quadrant D3,220,714527,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107582
B0112382
C0112292
D0129962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4791140.292215%
B4791320.667919%
C47912054.278856%
D47911863.882279%

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 6942 4792 6 6 0.09% 0.13%
B 6942 4792 6 6 0.09% 0.13%
C 6942 4792 192 192 2.77% 4.01%
D 6941 4791 152 152 2.19% 3.17%

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 523715 4819.64 535 525 108.6
A 13 254 8741 75.69 535 525 108.6
A 2 79 6423 54.33 535 525 108.6
B 0 186 294973 2890.07 539 525 101.9
B 7 202 160936 1574.47 539 525 101.9
B 5 255 44773 434.3 539 525 101.9
C 0 10 544608 4571.78 521 525 119.0
C 15 214 204163 1711.11 521 525 119.0
C 0 239 4967 37.32 521 525 119.0
D 13 249 543171 4257.19 527 514 127.5
D 2 120 187491 1466.85 527 514 127.5
D 12 218 101509 792.31 527 514 127.5

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