ASTROSAT CZTI

Data Quality Report

Orbit 06485

Creation date: 2024-06-27T15:07:51.354538
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/AS1A02_046T01_9000000864_06485cztM0_level2.evt modeM0/AS1A02_046T01_9000000864_06485cztM0_level2_quad_clean.evt
Size (bytes)693,054,720201,058,560
Size660.9 MB 191.7 MB
Events in quadrant A5,259,0311,358,657
Events in quadrant B5,235,0111,382,785
Events in quadrant C4,632,9881,329,873
Events in quadrant D5,140,1491,281,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229093
B0227502
C0215732
D0227102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106412011.888920%
B106411511.419040%
C10641190.178555%
D10641770.723616%

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 13211 10644 114 114 0.86% 1.07%
B 13211 10644 61 61 0.46% 0.57%
C 13211 10644 0 0 0.00% 0.00%
D 13211 10644 28 28 0.21% 0.26%

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 15 234 266325 1076.64 1231 1208 246.2
A 15 236 96632 387.52 1231 1208 246.2
A 15 174 91989 368.66 1231 1208 246.2
B 0 219 176040 762.74 1238 1210 229.2
B 0 198 108138 466.5 1238 1210 229.2
B 0 197 55315 236.05 1238 1210 229.2
C 1 16 19528 68.28 1178 1183 268.7
C 12 4 9974 32.72 1178 1183 268.7
C 13 61 9289 30.17 1178 1183 268.7
D 2 152 204007 709.87 1185 1147 285.8
D 13 137 146377 508.2 1185 1147 285.8
D 8 195 129893 450.52 1185 1147 285.8

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