ASTROSAT CZTI

Data Quality Report

Orbit 17739

Creation date: 2024-06-27T17:40:15.890452
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/AS1T03_070T02_9000002634_17739cztM0_level2.evt modeM0/AS1T03_070T02_9000002634_17739cztM0_level2_quad_clean.evt
Size (bytes)615,461,760113,388,480
Size587.0 MB 108.1 MB
Events in quadrant A4,300,595708,890
Events in quadrant B4,527,902709,941
Events in quadrant C4,389,831684,329
Events in quadrant D4,790,393686,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190712
B0194032
C0189773
D0205622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92901021.097955%
B92901361.463940%
C92891301.399505%
D92891381.485628%

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 10650 9290 1 1 0.01% 0.01%
B 10650 9290 22 22 0.21% 0.24%
C 10649 9289 0 0 0.00% 0.00%
D 10649 9289 45 45 0.42% 0.48%

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 15 174 51328 225.59 1102 1075 222.8
A 15 31 9352 37.16 1102 1075 222.8
A 0 226 9335 37.08 1102 1075 222.8
B 7 220 109100 514.36 1100 1071 210.0
B 10 245 33660 155.17 1100 1071 210.0
B 12 111 25668 117.12 1100 1071 210.0
C 14 238 162826 646.6 1063 1069 250.2
C 5 218 49621 194.08 1063 1069 250.2
C 3 233 29501 113.65 1063 1069 250.2
D 1 52 428223 1558.95 1074 1047 274.0
D 7 238 167931 609.03 1074 1047 274.0
D 2 234 45296 161.48 1074 1047 274.0

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