ASTROSAT CZTI

Data Quality Report

Orbit 20200216_A07_027T05_9000003506_level2

Creation date: 2020-02-18T10:36:42.570994
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_027T05_9000003506cztM0_level2_bc.evt modeM0/AS1A07_027T05_9000003506cztM0_level2_quad_clean.evt
Size (bytes)944,046,720297,918,720
Size900.3 MB 284.1 MB
Events in quadrant A4,867,8641,890,317
Events in quadrant B6,631,6181,886,369
Events in quadrant C4,878,0371,848,201
Events in quadrant D10,533,4081,707,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505370
B0564090
C0510800
D0706750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05040
B05040
C05040
D05040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245552851.160660%
B245556102.484219%
C245554511.836693%
D2455518917.701079%

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 27955 24551 0 0 0.00% 0.00%
B 27955 24549 31 31 0.11% 0.13%
C 27955 24551 1 1 0.00% 0.00%
D 27955 24548 472 472 1.69% 1.92%

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 42188 147.45 1256 1228 277.8
A 12 194 8067 24.62 1256 1228 277.8
A 0 226 7966 24.26 1256 1228 277.8
B 3 64 613131 2525.82 1258 1225 242.3
B 0 189 395588 1627.85 1258 1225 242.3
B 0 229 362458 1491.09 1258 1225 242.3
C 7 247 156567 535.57 1217 1207 290.1
C 10 91 23467 76.74 1217 1207 290.1
C 3 233 11692 36.14 1217 1207 290.1
D 1 52 4407227 15343.08 1206 1158 287.2
D 12 233 461645 1603.54 1206 1158 287.2
D 7 238 276014 957.12 1206 1158 287.2

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