ASTROSAT CZTI

Data Quality Report

Orbit 15450

Creation date: 2024-06-27T17:08:40.124405
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/AS1G08_032T01_9000002280_15450cztM0_level2.evt modeM0/AS1G08_032T01_9000002280_15450cztM0_level2_quad_clean.evt
Size (bytes)551,266,560116,017,920
Size525.7 MB 110.6 MB
Events in quadrant A4,070,633741,718
Events in quadrant B4,018,239757,283
Events in quadrant C4,029,404742,323
Events in quadrant D4,030,562713,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176803
B0174902
C0172552
D0177272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80511501.863123%
B80511171.453236%
C8051510.633462%
D8051961.192398%

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 8817 8054 51 51 0.58% 0.63%
B 8817 8054 12 12 0.14% 0.15%
C 8817 8054 0 0 0.00% 0.00%
D 8817 8054 30 30 0.34% 0.37%

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 14 238 223245 1138.2 958 936 195.3
A 14 237 84841 429.58 958 936 195.3
A 9 143 51256 257.63 958 936 195.3
B 0 197 86480 458.71 967 942 186.5
B 4 142 69882 369.7 967 942 186.5
B 0 189 35977 187.88 967 942 186.5
C 3 233 334088 1504.16 946 949 221.5
C 10 22 6679 25.87 946 949 221.5
C 13 61 6658 25.78 946 949 221.5
D 5 222 249379 1083.1 940 913 229.4
D 7 38 81686 352.1 940 913 229.4
D 2 234 34244 145.29 940 913 229.4

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