ASTROSAT CZTI

Data Quality Report

Orbit 20181224_A05_140T01_9000002596_level2

Creation date: 2018-12-26T10:39:50.978837
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/AS1A05_140T01_9000002596cztM0_level2_bc.evt modeM0/AS1A05_140T01_9000002596cztM0_level2_quad_clean.evt
Size (bytes)2,675,508,4801,029,432,960
Size2.5 GB 981.7 MB
Events in quadrant A17,815,3476,538,700
Events in quadrant B17,170,5226,593,597
Events in quadrant C18,139,8336,308,623
Events in quadrant D22,404,1036,211,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01719200
B01682950
C01730880
D01856410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016420
B016420
C016420
D016420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8064513761.706243%
B8064511011.365243%
C8064513561.681443%
D8064519232.384525%

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 93850 80641 33 33 0.04% 0.04%
B 93850 80642 6 6 0.01% 0.01%
C 93850 80641 0 0 0.00% 0.00%
D 93850 80642 238 238 0.25% 0.30%

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 15 174 1203387 1296.01 4296 4219 925.3
A 4 208 97872 101.22 4296 4219 925.3
A 0 226 28490 26.23 4296 4219 925.3
B 10 245 241809 293.86 4332 4231 808.5
B 0 189 91722 108.22 4332 4231 808.5
B 0 219 58327 66.91 4332 4231 808.5
C 3 233 1773295 1827.35 4160 4139 968.2
C 5 218 320934 327.21 4160 4139 968.2
C 13 61 24393 20.92 4160 4139 968.2
D 5 222 3840517 3953.37 4226 4090 970.4
D 13 189 1030320 1057.51 4226 4090 970.4
D 2 234 322422 328.04 4226 4090 970.4

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