ASTROSAT CZTI

Data Quality Report

Orbit 57912

Creation date: 2026-06-11T20:49:36.938162
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_125T11_9000006582_57912cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57912cztM0_level2_quad_clean.evt
Size (bytes)387,915,84094,559,040
Size369.9 MB 90.2 MB
Events in quadrant A2,940,727619,548
Events in quadrant B3,087,322656,987
Events in quadrant C4,147,748581,636
Events in quadrant D3,682,452556,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133921
B0138701
C0167881
D0157071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438640.994098%
B6438951.475614%
C64382033.153153%
D64381782.764834%

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 7288 6439 2 2 0.03% 0.03%
B 7288 6438 19 19 0.26% 0.30%
C 7288 6439 156 156 2.14% 2.42%
D 7288 6439 124 124 1.70% 1.93%

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 64 176047 1010.82 698 677 173.5
A 3 14 34520 195.07 698 677 173.5
A 3 245 15695 86.56 698 677 173.5
B 0 153 108146 735.96 682 657 146.1
B 10 247 58769 397.89 682 657 146.1
B 5 185 48030 324.36 682 657 146.1
C 15 224 1301695 7153.19 666 660 181.9
C 12 252 128128 700.83 666 660 181.9
C 15 208 36252 195.69 666 660 181.9
D 2 249 375781 1953.38 673 641 192.0
D 8 160 367408 1909.78 673 641 192.0
D 5 32 57282 294.93 673 641 192.0

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