ASTROSAT CZTI

Data Quality Report

Orbit 20160923_G05_106T01_9000000678_level2

Creation date: 2017-10-18T04:16:03.052514
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/AS1G05_106T01_9000000678cztM0_level2.evt modeM0/AS1G05_106T01_9000000678cztM0_level2_quad_clean.evt
Size (bytes)6,188,002,5601,026,169,920
Size5.8 GB 978.6 MB
Events in quadrant A43,181,0376,290,439
Events in quadrant B47,517,0226,545,169
Events in quadrant C40,635,3996,325,722
Events in quadrant D50,154,2435,908,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01896260
B01990390
C01822700
D02098990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01340
D01360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017940
B017820
C017940
D017880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8767921122.408787%
B8772218772.139714%
C877079051.031845%
D8761834783.969504%

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 102424 88230 761 761 0.74% 0.86%
B 102424 88259 541 541 0.53% 0.61%
C 102424 88252 18 18 0.02% 0.02%
D 102424 88206 2538 2538 2.48% 2.88%

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 0 50 2112160 1019.3 10186 9969 2062.4
A 15 174 1716639 827.52 10186 9969 2062.4
A 14 111 154523 70.09 10186 9969 2062.4
B 14 167 1529263 778.07 10343 10104 1952.5
B 10 16 1359028 690.88 10343 10104 1952.5
B 4 80 1149632 583.63 10343 10104 1952.5
C 1 16 1599218 694.78 9943 9983 2287.4
C 14 67 89855 34.92 9943 9983 2287.4
C 13 61 81874 31.43 9943 9983 2287.4
D 2 16 4492469 1881.54 9756 9455 2382.6
D 2 63 2803195 1172.54 9756 9455 2382.6
D 4 95 2235837 934.42 9756 9455 2382.6

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