ASTROSAT CZTI

Data Quality Report

Orbit 20200703_A07_027T11_9000003752_level2

Creation date: 2021-01-10T05:31:28.422277
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_027T11_9000003752cztM0_level2_bc.evt modeM0/AS1A07_027T11_9000003752cztM0_level2_quad_clean.evt
Size (bytes)831,634,560321,482,880
Size793.1 MB 306.6 MB
Events in quadrant A5,031,1822,053,143
Events in quadrant B5,132,5682,083,407
Events in quadrant C5,141,1481,993,286
Events in quadrant D8,224,7971,942,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503430
B0504290
C0511060
D0601260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242076452.664519%
B242077293.011526%
C242067373.044700%
D242079744.023630%

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 25457 24205 0 0 0.00% 0.00%
B 25457 24204 0 0 0.00% 0.00%
C 25457 24203 4 4 0.02% 0.02%
D 25457 24204 56 56 0.22% 0.23%

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 166247 606.06 1246 1219 272.3
A 11 29 51608 185.05 1246 1219 272.3
A 13 254 33565 118.79 1246 1219 272.3
B 0 219 99721 408.01 1259 1227 241.4
B 0 245 69984 284.82 1259 1227 241.4
B 0 190 66108 268.77 1259 1227 241.4
C 3 233 460443 1606.85 1210 1202 285.8
C 14 225 23544 78.17 1210 1202 285.8
C 2 16 8469 25.43 1210 1202 285.8
D 8 195 1089684 3792.18 1219 1181 287.0
D 1 52 770418 2679.91 1219 1181 287.0
D 12 1 653675 2273.19 1219 1181 287.0

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