ASTROSAT CZTI

Data Quality Report

Orbit 23886

Creation date: 2024-06-27T18:59:47.306889
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/AS1A07_142T01_9000003540_23886cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23886cztM0_level2_quad_clean.evt
Size (bytes)477,169,92091,630,080
Size455.1 MB 87.4 MB
Events in quadrant A3,336,837589,511
Events in quadrant B3,500,539596,767
Events in quadrant C3,580,400561,090
Events in quadrant D3,572,939555,081

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140802
B0144862
C0147572
D0150902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778771.136028%
B67781051.549130%
C67782022.980230%
D6778731.077014%

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 7583 6779 0 0 0.00% 0.00%
B 7583 6779 3 3 0.04% 0.04%
C 7583 6779 34 34 0.45% 0.50%
D 7583 6779 8 8 0.11% 0.12%

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 13 254 11623 61.94 865 848 174.0
A 0 226 7431 37.84 865 848 174.0
A 3 137 7401 37.67 865 848 174.0
B 0 189 38556 232.43 863 843 162.3
B 15 33 22414 132.94 863 843 162.3
B 0 197 20032 118.26 863 843 162.3
C 0 10 269265 1411.76 816 822 190.1
C 14 238 130472 681.84 816 822 190.1
C 13 61 5653 25.41 816 822 190.1
D 8 195 170291 840.02 835 811 201.8
D 1 52 164228 809.97 835 811 201.8
D 13 174 31086 150.06 835 811 201.8

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