ASTROSAT CZTI

Data Quality Report

Orbit 38086

Creation date: 2024-06-27T21:48:14.381556
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/AS1A11_047T09_9000005362_38086cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38086cztM0_level2_quad_clean.evt
Size (bytes)619,280,640171,267,840
Size590.6 MB 163.3 MB
Events in quadrant A5,134,6381,185,854
Events in quadrant B4,597,7321,224,155
Events in quadrant C6,118,0801,115,683
Events in quadrant D6,359,9341,022,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208803
B0194352
C0236702
D0250822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9202290.315149%
B9202320.347750%
C92023914.249076%
D92023924.259943%

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 13388 9204 17 17 0.13% 0.18%
B 13388 9204 13 13 0.10% 0.14%
C 13388 9204 345 345 2.58% 3.75%
D 13388 9204 358 358 2.67% 3.89%

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 517288 2309.12 1108 1088 223.5
A 12 16 141422 627.76 1108 1088 223.5
A 9 143 46538 203.31 1108 1088 223.5
B 0 229 110254 520.48 1112 1084 209.7
B 0 230 38514 178.45 1112 1084 209.7
B 4 232 26903 123.1 1112 1084 209.7
C 1 23 1543474 6340.61 1059 1069 243.3
C 15 214 367681 1507.09 1059 1069 243.3
C 0 10 33836 134.7 1059 1069 243.3
D 2 250 1041724 4074.09 1053 1023 255.4
D 13 249 293004 1143.03 1053 1023 255.4
D 1 52 224299 874.07 1053 1023 255.4

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