ASTROSAT CZTI

Data Quality Report

Orbit 53774

Creation date: 2025-09-06T08:25:05.483048
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/AS1A14_022T04_9000006506_53774cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53774cztM0_level2_quad_clean.evt
Size (bytes)810,475,20075,899,520
Size772.9 MB 72.4 MB
Events in quadrant A16,485,90333,132
Events in quadrant B3,550,409671,389
Events in quadrant C6,267,845564,859
Events in quadrant D3,194,581577,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535005
B0151231
C0230891
D0142951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6468616895.361781%
B64691772.736126%
C646968710.619879%
D6469560.865667%

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 7587 6467 6123 6123 80.70% 94.68%
B 7589 6469 72 72 0.95% 1.11%
C 7589 6469 700 700 9.22% 10.82%
D 7589 6469 27 27 0.36% 0.42%

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 3 63 15176787 203872.46 297 289 74.4
A 4 249 101714 1362.48 297 289 74.4
A 4 3 10774 140.84 297 289 74.4
B 0 213 245068 1648.09 691 667 148.3
B 6 255 221026 1485.97 691 667 148.3
B 5 185 59126 394.21 691 667 148.3
C 15 224 3035346 16822.23 654 645 180.4
C 7 64 183858 1015.6 654 645 180.4
C 15 208 127140 701.2 654 645 180.4
D 1 241 119334 614.61 676 646 193.1
D 2 172 71305 365.9 676 646 193.1
D 13 153 70403 361.23 676 646 193.1

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