ASTROSAT CZTI

Data Quality Report

Orbit 44867

Creation date: 2024-06-27T23:07:25.039911
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_017T01_9000006028_44867cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44867cztM0_level2_quad_clean.evt
Size (bytes)513,541,440107,735,040
Size489.8 MB 102.7 MB
Events in quadrant A4,956,396734,521
Events in quadrant B3,433,876757,511
Events in quadrant C3,686,966716,189
Events in quadrant D6,435,131606,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200251
B0146801
C0155491
D0236251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64091452.262443%
B6410841.310452%
C64101922.995320%
D641081012.636505%

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 7519 6410 10 10 0.13% 0.16%
B 7520 6411 25 25 0.33% 0.39%
C 7520 6411 126 126 1.68% 1.97%
D 7520 6411 511 511 6.80% 7.97%

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 10 83 2066576 13447.44 737 721 153.6
A 13 248 27214 172.45 737 721 153.6
A 7 3 10266 62.13 737 721 153.6
B 5 255 188683 1303.25 740 718 144.2
B 0 155 137454 948.05 740 718 144.2
B 0 168 36746 249.8 740 718 144.2
C 12 2 359934 2103.96 726 729 170.7
C 14 254 285159 1665.98 726 729 170.7
C 5 128 147077 857.2 726 729 170.7
D 1 52 2256667 13171.7 692 671 171.3
D 2 249 426349 2485.33 692 671 171.3
D 5 235 375306 2187.32 692 671 171.3

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