ASTROSAT CZTI

Data Quality Report

Orbit 16272

Creation date: 2024-06-27T17:20:11.737530
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/AS1A05_072T05_9000002394_16272cztM0_level2.evt modeM0/AS1A05_072T05_9000002394_16272cztM0_level2_quad_clean.evt
Size (bytes)530,614,08094,737,600
Size506.0 MB 90.3 MB
Events in quadrant A3,510,148613,540
Events in quadrant B5,325,422587,213
Events in quadrant C3,171,654616,926
Events in quadrant D3,628,826605,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144962
B0199761
C0133981
D0150611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63881812.833438%
B638872411.333751%
C63881432.238572%
D63881522.379461%

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 7004 6390 53 53 0.76% 0.83%
B 7004 6390 415 415 5.93% 6.49%
C 7004 6390 0 0 0.00% 0.00%
D 7004 6390 53 53 0.76% 0.83%

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 9 143 327063 2046.45 784 768 159.4
A 15 174 151750 946.93 784 768 159.4
A 13 248 10752 62.61 784 768 159.4
B 3 112 1992384 13627.32 752 730 146.2
B 0 189 101807 691.59 752 730 146.2
B 0 219 93012 631.41 752 730 146.2
C 14 238 121978 692.9 750 755 174.9
C 3 233 108590 616.38 750 755 174.9
C 0 207 11294 60.24 750 755 174.9
D 1 52 589613 2924.88 758 743 201.3
D 15 0 105958 522.6 758 743 201.3
D 10 70 24705 119.02 758 743 201.3

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