ASTROSAT CZTI

Data Quality Report

Orbit 51744

Creation date: 2025-04-22T16:24:16.030249
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_090T01_9000006464_51744cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51744cztM0_level2_quad_clean.evt
Size (bytes)589,746,24095,578,560
Size562.4 MB 91.2 MB
Events in quadrant A4,194,707628,397
Events in quadrant B4,087,550677,539
Events in quadrant C6,523,828593,936
Events in quadrant D6,498,402521,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169852
B0167822
C0240958
D0239592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67882984.390100%
B67883695.436064%
C67875778.501547%
D678799914.719316%

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 7613 6789 97 97 1.27% 1.43%
B 7613 6789 88 88 1.16% 1.30%
C 7612 6788 362 362 4.76% 5.33%
D 7612 6788 807 807 10.60% 11.89%

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 4 175 372598 2000.04 759 739 185.9
A 11 3 187454 1004.25 759 739 185.9
A 5 240 106803 570.47 759 739 185.9
B 7 0 346437 2144.45 742 714 161.2
B 1 223 117165 722.32 742 714 161.2
B 5 32 113532 699.79 742 714 161.2
C 10 171 1831521 9154.71 729 721 200.0
C 13 3 457604 2284.59 729 721 200.0
C 9 38 250230 1247.64 729 721 200.0
D 11 129 3245415 16708.99 698 672 194.2
D 1 3 162055 831.05 698 672 194.2
D 8 176 111052 568.41 698 672 194.2

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