ASTROSAT CZTI

Data Quality Report

Orbit 52445

Creation date: 2025-06-27T22:15:27.940454
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/AS1A13_037T01_9000006476_52445cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52445cztM0_level2_quad_clean.evt
Size (bytes)976,792,32089,280,000
Size931.5 MB 85.1 MB
Events in quadrant A3,887,963696,374
Events in quadrant B5,781,569723,858
Events in quadrant C11,110,465458,413
Events in quadrant D14,790,920295,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171802
B0225020
C0382950
D0491990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75981231.618847%
B75994345.711278%
C7599244232.135807%
D7599427656.270562%

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 7598 7598 84 84 1.11% 1.11%
B 7599 7599 195 195 2.57% 2.57%
C 7598 7598 2356 2356 31.01% 31.01%
D 7599 7599 4103 4103 53.99% 53.99%

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 61 259437 1309.93 805 784 197.5
A 12 80 210932 1064.28 805 784 197.5
A 4 3 65846 329.5 805 784 197.5
B 12 32 825444 4821.37 785 756 171.0
B 7 0 799761 4671.22 785 756 171.0
B 10 254 615550 3594.27 785 756 171.0
C 15 231 3617513 20459.32 641 635 176.8
C 15 224 1974290 11164.22 641 635 176.8
C 2 12 1093280 6180.68 641 635 176.8
D 6 42 6244809 39857.02 544 518 156.7
D 15 174 1844107 11767.54 544 518 156.7
D 12 17 1474505 9408.39 544 518 156.7

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