ASTROSAT CZTI

Data Quality Report

Orbit 20443

Creation date: 2024-06-27T18:15:37.570067
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/AS1C04_009T06_9000003020_20443cztM0_level2.evt modeM0/AS1C04_009T06_9000003020_20443cztM0_level2_quad_clean.evt
Size (bytes)660,277,440172,664,640
Size629.7 MB 164.7 MB
Events in quadrant A4,393,5121,175,348
Events in quadrant B4,766,4201,181,911
Events in quadrant C4,651,8151,131,613
Events in quadrant D5,555,7141,097,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193961
B0203601
C0200391
D0232831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92721511.628559%
B92721531.650129%
C92721211.305004%
D92734604.960638%

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 9352 9273 5 5 0.05% 0.05%
B 9352 9272 5 5 0.05% 0.05%
C 9352 9273 0 0 0.00% 0.00%
D 9353 9274 309 309 3.30% 3.33%

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 5 16 112478 508.38 1088 1063 219.2
A 14 111 53113 237.5 1088 1063 219.2
A 12 16 41902 186.35 1088 1063 219.2
B 0 197 221665 1093.09 1078 1052 201.8
B 0 189 103009 505.17 1078 1052 201.8
B 0 190 58345 283.87 1078 1052 201.8
C 9 54 408677 1704.63 1033 1037 239.1
C 14 238 166246 690.85 1033 1037 239.1
C 3 233 36638 148.87 1033 1037 239.1
D 1 52 758309 3003.27 1038 1007 252.2
D 12 218 444486 1758.73 1038 1007 252.2
D 13 153 128689 506.35 1038 1007 252.2

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