ASTROSAT CZTI

Data Quality Report

Orbit 53827

Creation date: 2025-09-09T22:54:04.793083
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_53827cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53827cztM0_level2_quad_clean.evt
Size (bytes)216,619,20037,013,760
Size206.6 MB 35.3 MB
Events in quadrant A1,155,436253,103
Events in quadrant B1,257,182264,882
Events in quadrant C3,346,332189,615
Events in quadrant D2,047,490219,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055660
B056830
C0118296
D079420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270110.037023%
B270260.222058%
C270164423.843021%
D27021013.737972%

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 2701 2701 2 2 0.07% 0.07%
B 2702 2702 5 5 0.19% 0.19%
C 2702 2702 520 520 19.25% 19.25%
D 2702 2702 112 112 4.15% 4.15%

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 0 8 33682 475.24 271 263 70.3
A 4 249 31368 442.33 271 263 70.3
A 3 79 9556 132.15 271 263 70.3
B 0 197 48503 830.14 264 256 58.1
B 0 213 37199 635.64 264 256 58.1
B 5 250 28091 478.93 264 256 58.1
C 15 224 958929 14372.75 236 233 66.7
C 15 158 776182 11633.01 236 233 66.7
C 5 10 180348 2700.28 236 233 66.7
D 8 176 442444 5963.92 259 247 74.1
D 15 93 138948 1870.66 259 247 74.1
D 10 172 81775 1099.57 259 247 74.1

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