ASTROSAT CZTI

Data Quality Report

Orbit 15616

Creation date: 2024-06-27T17:11:10.345755
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/AS1G08_031T01_9000002314_15616cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15616cztM0_level2_quad_clean.evt
Size (bytes)429,410,88090,432,000
Size409.5 MB 86.2 MB
Events in quadrant A3,104,673585,710
Events in quadrant B3,169,379592,958
Events in quadrant C3,119,749570,252
Events in quadrant D3,193,600560,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128352
B0129361
C0128481
D0132621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143250.406967%
B6143400.651148%
C6143440.716262%
D6143450.732541%

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 7419 6145 0 0 0.00% 0.00%
B 7419 6144 0 0 0.00% 0.00%
C 7419 6144 0 0 0.00% 0.00%
D 7419 6144 24 24 0.32% 0.39%

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 0 253 36724 225.27 796 779 159.6
A 0 226 7077 39.47 796 779 159.6
A 12 194 5860 31.84 796 779 159.6
B 3 64 45278 297.71 787 769 149.5
B 12 111 16982 108.44 787 769 149.5
B 0 214 15873 101.03 787 769 149.5
C 14 238 118988 664.9 766 772 177.8
C 3 233 9280 47.85 766 772 177.8
C 7 247 5289 25.41 766 772 177.8
D 4 95 177461 925.87 782 761 190.8
D 10 70 34494 176.75 782 761 190.8
D 12 110 28760 146.71 782 761 190.8

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