ASTROSAT CZTI

Data Quality Report

Orbit 20911

Creation date: 2024-06-27T18:21:03.463357
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/AS1A06_002T03_9000003080_20911cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20911cztM0_level2_quad_clean.evt
Size (bytes)720,754,560130,377,600
Size687.4 MB 124.3 MB
Events in quadrant A5,087,554822,607
Events in quadrant B5,176,660826,463
Events in quadrant C5,059,374804,048
Events in quadrant D5,802,356777,698

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125
B0114
C0103
D0125

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236311486
B0237131477
C0234151468
D0259061669

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022618
B022517
C022519
D022612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10363790.762328%
B10368960.925926%
C103541581.525980%
D103792562.466519%

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 11264 10524 23 23 0.20% 0.22%
B 11264 10523 17 17 0.15% 0.16%
C 11264 10520 41 41 0.36% 0.39%
D 11265 10556 270 270 2.40% 2.56%

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 6 16 287038 1155.6 1223 1199 247.4
A 15 174 57948 229.43 1223 1199 247.4
A 5 16 43584 171.36 1223 1199 247.4
B 7 220 187801 795.81 1223 1194 234.5
B 0 228 60669 253.64 1223 1194 234.5
B 0 190 38184 157.75 1223 1194 234.5
C 9 54 271508 991.02 1170 1179 272.8
C 14 238 184566 672.29 1170 1179 272.8
C 0 207 18574 63.77 1170 1179 272.8
D 1 52 1213629 4210.4 1183 1147 288.0
D 7 38 82004 280.78 1183 1147 288.0
D 2 234 54174 184.14 1183 1147 288.0

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