ASTROSAT CZTI

Data Quality Report

Orbit 53910

Creation date: 2025-09-15T14:08:45.911712
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_057T04_9000006508_53910cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53910cztM0_level2_quad_clean.evt
Size (bytes)776,053,44090,881,280
Size740.1 MB 86.7 MB
Events in quadrant A3,866,233693,121
Events in quadrant B3,629,669744,346
Events in quadrant C5,155,900635,588
Events in quadrant D15,510,736172,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166660
B0157150
C0203930
D0510740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72681652.270226%
B7268841.155751%
C72683665.035773%
D7268537173.899285%

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 7268 7268 134 134 1.84% 1.84%
B 7268 7268 10 10 0.14% 0.14%
C 7268 7268 324 324 4.46% 4.46%
D 7267 7267 4999 4999 68.79% 68.79%

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 4 249 398695 2029.37 793 773 196.1
A 15 174 240655 1223.38 793 773 196.1
A 4 207 25314 125.16 793 773 196.1
B 5 250 225096 1336.05 790 764 167.9
B 7 0 106872 631.95 790 764 167.9
B 0 213 29488 171.07 790 764 167.9
C 15 224 1019302 4894.26 758 752 208.1
C 1 44 402961 1932.67 758 752 208.1
C 12 254 355791 1706.01 758 752 208.1
D 8 176 13255460 135112.8 341 325 98.1
D 2 16 319093 3249.28 341 325 98.1
D 3 12 210520 2142.57 341 325 98.1

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