ASTROSAT CZTI

Data Quality Report

Orbit 35578

Creation date: 2022-04-28T00:49:02.098854
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/AS1A11_065T21_9000005094_35578cztM0_level2.evt modeM0/AS1A11_065T21_9000005094_35578cztM0_level2_quad_clean.evt
Size (bytes)192,087,36033,382,080
Size183.2 MB 31.8 MB
Events in quadrant A874,316237,244
Events in quadrant B1,957,373204,779
Events in quadrant C1,113,890226,756
Events in quadrant D1,750,779213,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037621
B070011
C043521
D064221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114038858763754446
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175220.114155%
B175249528.253425%
C1752995.650685%
D175218010.273973%

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 1752 1752 0 0 0.00% 0.00%
B 1752 1752 386 386 22.03% 22.03%
C 1752 1752 69 69 3.94% 3.94%
D 1752 1752 106 106 6.05% 6.05%

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 10 83 62464 1425.4 206 202 43.7
A 13 6 7373 164.17 206 202 43.7
A 7 3 3374 72.62 206 202 43.7
B 5 172 1208987 34641.18 178 173 34.9
B 5 200 25775 733.68 178 173 34.9
B 0 190 12225 345.38 178 173 34.9
C 0 10 253477 5443.49 196 197 46.5
C 15 214 71761 1538.05 196 197 46.5
C 14 67 20162 429.09 196 197 46.5
D 10 118 362766 7325.5 197 192 49.5
D 1 52 224180 4525.49 197 192 49.5
D 8 195 148661 2999.69 197 192 49.5

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