ASTROSAT CZTI

Data Quality Report

Orbit 21706

Creation date: 2024-06-27T18:31:17.500321
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_039T02_9000003212_21706cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21706cztM0_level2_quad_clean.evt
Size (bytes)799,122,240170,173,440
Size762.1 MB 162.3 MB
Events in quadrant A4,390,0221,139,049
Events in quadrant B4,737,3471,159,765
Events in quadrant C8,870,5681,105,159
Events in quadrant D5,571,9271,101,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196171
B0202101
C0329241
D0230391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93481221.305092%
B93491932.064392%
C93496436.877741%
D93493243.465611%

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 9673 9349 0 0 0.00% 0.00%
B 9674 9350 45 45 0.47% 0.48%
C 9674 9350 101 101 1.04% 1.08%
D 9674 9350 218 218 2.25% 2.33%

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 15 236 240491 1099.9 1075 1051 217.7
A 13 254 18318 79.32 1075 1051 217.7
A 0 226 9016 36.59 1075 1051 217.7
B 3 64 293823 1443.78 1072 1045 202.8
B 0 189 90724 442.24 1072 1045 202.8
B 0 230 57539 278.59 1072 1045 202.8
C 8 208 4687808 19601.88 1022 1029 239.1
C 14 238 159387 662.31 1022 1029 239.1
C 13 250 15655 61.17 1022 1029 239.1
D 1 52 1184460 4689.05 1044 1012 252.4
D 13 104 111280 436.9 1044 1012 252.4
D 2 136 108479 425.8 1044 1012 252.4

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