ASTROSAT CZTI

Data Quality Report

Orbit 17858

Creation date: 2024-06-27T17:41:43.849554
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_085T01_9000002658_17858cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17858cztM0_level2_quad_clean.evt
Size (bytes)680,178,240135,089,280
Size648.7 MB 128.8 MB
Events in quadrant A4,280,221903,245
Events in quadrant B4,380,580903,825
Events in quadrant C4,350,169861,091
Events in quadrant D6,970,404790,736

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189662
B0190812
C0189322
D0269082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91141141.250823%
B91151231.349424%
C91151441.579813%
D91158088.864509%

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 11124 9114 2 2 0.02% 0.02%
B 11125 9116 0 0 0.00% 0.00%
C 11125 9115 0 0 0.00% 0.00%
D 11125 9116 675 675 6.07% 7.40%

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 0 226 9712 38.6 1112 1092 223.3
A 3 137 8345 32.48 1112 1092 223.3
A 15 174 8280 32.19 1112 1092 223.3
B 0 183 27091 124.19 1109 1083 209.4
B 12 111 25999 118.98 1109 1083 209.4
B 11 111 21944 99.61 1109 1083 209.4
C 14 238 164217 662.93 1058 1065 246.1
C 3 233 50545 201.05 1058 1065 246.1
C 13 61 7358 25.57 1058 1065 246.1
D 7 238 3000084 11918.58 1034 1004 251.6
D 2 234 40192 155.74 1034 1004 251.6
D 1 52 19480 73.43 1034 1004 251.6

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