ASTROSAT CZTI

Data Quality Report

Orbit 20201102_A09_038T13_9000003966_level2

Creation date: 2021-01-07T15:21:03.277097
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/AS1A09_038T13_9000003966cztM0_level2_bc.evt modeM0/AS1A09_038T13_9000003966cztM0_level2_quad_clean.evt
Size (bytes)98,913,60047,972,160
Size94.3 MB 45.7 MB
Events in quadrant A661,448312,099
Events in quadrant B698,892322,079
Events in quadrant C647,607306,484
Events in quadrant D773,801296,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062730
B064840
C062770
D065390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3010270.897010%
B3010240.797342%
C3010411.362126%
D3010120.398671%

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 4090 3010 1 1 0.02% 0.03%
B 4090 3010 0 0 0.00% 0.00%
C 4090 3010 0 0 0.00% 0.00%
D 4090 3010 1 1 0.02% 0.03%

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 8 192 9248 230.95 168 164 39.3
A 13 254 4883 119.98 168 164 39.3
A 0 226 1093 23.62 168 164 39.3
B 0 183 9870 273.51 172 167 35.5
B 0 230 8856 244.93 172 167 35.5
B 15 32 5795 158.65 172 167 35.5
C 4 175 12077 289.6 163 163 41.1
C 1 16 2169 48.76 163 163 41.1
C 7 221 1563 34.03 163 163 41.1
D 1 52 107681 2699.58 164 158 39.8
D 2 250 16349 406.51 164 158 39.8
D 2 234 12306 305.0 164 158 39.8

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