ASTROSAT CZTI

Data Quality Report

Orbit 52323

Creation date: 2025-07-22T17:59:44.068856
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/AS1C09_011T05_9000006474_52323cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52323cztM0_level2_quad_clean.evt
Size (bytes)418,728,96055,324,800
Size399.3 MB 52.8 MB
Events in quadrant A2,222,272393,347
Events in quadrant B2,646,286415,845
Events in quadrant C5,622,887274,269
Events in quadrant D4,689,008301,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09816360
B011102337
C020277739
D017383582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0862
B0860
C0862
D0862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4119811.966497%
B41131533.719912%
C4094131132.022472%
D409766216.158165%

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 6934 4142 76 76 1.10% 1.83%
B 6934 4138 113 113 1.63% 2.73%
C 6934 4120 1217 1217 17.55% 29.54%
D 6934 4123 667 667 9.62% 16.18%

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 15 239 95000 904.56 423 414 104.6
A 11 3 86088 819.33 423 414 104.6
A 7 206 76413 726.81 423 414 104.6
B 4 171 499899 5679.54 412 398 87.9
B 0 216 222773 2528.5 412 398 87.9
B 0 213 59120 667.69 412 398 87.9
C 15 224 3180703 33299.97 341 338 95.5
C 9 38 402774 4213.7 341 338 95.5
C 15 178 263037 2750.59 341 338 95.5
D 12 2 1050229 9844.62 370 352 106.6
D 12 17 728514 6827.92 370 352 106.6
D 2 62 275087 2576.17 370 352 106.6

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