ASTROSAT CZTI

Data Quality Report

Orbit 44129

Creation date: 2024-06-27T22:59:32.467270
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_012T02_9000005950_44129cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44129cztM0_level2_quad_clean.evt
Size (bytes)610,591,680109,255,680
Size582.3 MB 104.2 MB
Events in quadrant A8,356,948658,240
Events in quadrant B3,503,729781,457
Events in quadrant C3,393,901749,421
Events in quadrant D6,801,370628,023

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299031
B0155511
C0153321
D0250232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7050117016.595745%
B7050911.290780%
C7051761.077861%
D705073510.425532%

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 7660 7051 1069 1069 13.96% 15.16%
B 7660 7051 34 34 0.44% 0.48%
C 7661 7052 49 49 0.64% 0.69%
D 7660 7051 653 653 8.52% 9.26%

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 15 223 4088802 26369.59 745 730 155.0
A 10 83 1263330 8144.24 745 730 155.0
A 14 238 34048 214.91 745 730 155.0
B 5 172 129642 837.43 780 759 153.9
B 5 235 70715 454.54 780 759 153.9
B 0 219 65637 421.55 780 759 153.9
C 14 254 313325 1720.46 765 768 181.7
C 12 16 41465 224.01 765 768 181.7
C 1 241 32604 175.24 765 768 181.7
D 1 52 1487991 8013.76 730 706 185.6
D 5 235 1190755 6412.2 730 706 185.6
D 1 47 731135 3935.68 730 706 185.6

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