ASTROSAT CZTI

Data Quality Report

Orbit 20200317_A07_067T01_9000003578_level2

Creation date: 2020-03-26T21:13:43.362454
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_067T01_9000003578cztM0_level2_bc.evt modeM0/AS1A07_067T01_9000003578cztM0_level2_quad_clean.evt
Size (bytes)7,896,784,3202,324,975,040
Size7.4 GB 2.2 GB
Events in quadrant A37,806,05815,068,978
Events in quadrant B38,135,54015,326,101
Events in quadrant C44,530,97614,643,693
Events in quadrant D106,606,01713,227,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02770
B02780
C02780
D02780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036180
B036180
C036180
D036180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03671340
B03688720
C03942160
D06616400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17735521361.204364%
B17735425681.447952%
C17735448502.734644%
D1773543598420.289365%

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 226289 177352 33 33 0.01% 0.02%
B 226289 177342 59 59 0.03% 0.03%
C 226290 177346 423 423 0.19% 0.24%
D 226289 177340 2751 2751 1.22% 1.55%

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 386864 181.83 9662 9510 2075.3
A 13 254 263279 122.28 9662 9510 2075.3
A 3 1 119207 52.86 9662 9510 2075.3
B 0 245 202916 106.17 9733 9500 1821.7
B 0 190 139159 71.17 9733 9500 1821.7
B 4 216 119224 60.23 9733 9500 1821.7
C 2 16 4014279 1855.43 9230 9204 2158.6
C 0 239 2422098 1117.82 9230 9204 2158.6
C 7 247 2004416 924.32 9230 9204 2158.6
D 7 238 56932667 28140.38 8628 8327 2022.9
D 8 195 5961602 2942.98 8628 8327 2022.9
D 12 218 5315930 2623.8 8628 8327 2022.9

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