ASTROSAT CZTI

Data Quality Report

Orbit 53635

Creation date: 2025-08-28T01:00:45.372272
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_022T05_9000006504_53635cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53635cztM0_level2_quad_clean.evt
Size (bytes)1,388,534,40060,998,400
Size1.3 GB 58.2 MB
Events in quadrant A12,585,365361,259
Events in quadrant B16,889,337108,872
Events in quadrant C14,090,536314,067
Events in quadrant D7,276,157556,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423820
B0552442
C0467170
D0266900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7259374451.577352%
B7258632687.158997%
C7258410056.489391%
D7258104514.397906%

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 3421 3421 47.07% 47.07%
B 7267 7261 5493 5493 75.59% 75.65%
C 7267 7264 3960 3960 54.49% 54.52%
D 7267 7267 1046 1046 14.39% 14.39%

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 3 78 8567525 59408.64 570 556 144.2
A 4 191 782504 5422.51 570 556 144.2
A 15 174 184362 1274.62 570 556 144.2
B 15 20 14332863 217238.79 300 290 66.0
B 4 206 753182 11411.58 300 290 66.0
B 7 0 139340 2107.58 300 290 66.0
C 1 241 9016827 64026.4 508 505 140.8
C 15 224 1985186 14093.55 508 505 140.8
C 13 3 233264 1652.86 508 505 140.8
D 8 176 1683790 8060.65 724 692 208.8
D 10 172 1086459 5199.93 724 692 208.8
D 3 12 474062 2267.05 724 692 208.8

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