ASTROSAT CZTI

Data Quality Report

Orbit 20210616_C06_006T02_9000004468_level2

Creation date: 2021-06-18T09:13:26.322374
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/AS1C06_006T02_9000004468cztM0_level2_bc.evt modeM0/AS1C06_006T02_9000004468cztM0_level2_quad_clean.evt
Size (bytes)243,743,04074,298,240
Size232.5 MB 70.9 MB
Events in quadrant A1,061,778480,035
Events in quadrant B2,641,897479,922
Events in quadrant C1,107,540459,073
Events in quadrant D2,194,154451,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111580
B0166780
C0115730
D0147910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54142264.174363%
B54143115.744366%
C54143877.148134%
D54142795.153306%

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 5414 5414 0 0 0.00% 0.00%
B 5414 5414 0 0 0.00% 0.00%
C 5414 5414 1 1 0.02% 0.02%
D 5413 5413 10 10 0.18% 0.18%

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 13 254 10061 156.38 274 268 62.6
A 0 226 1723 23.23 274 268 62.6
A 12 194 1696 22.8 274 268 62.6
B 6 159 1418231 25496.58 275 267 55.6
B 0 190 75205 1347.47 275 267 55.6
B 15 201 18211 322.65 275 267 55.6
C 3 233 53930 846.49 261 259 63.4
C 14 254 24631 384.39 261 259 63.4
C 2 114 10281 158.07 261 259 63.4
D 8 195 650325 10147.24 267 259 64.1
D 2 250 200045 3118.57 267 259 64.1
D 13 174 189388 2952.22 267 259 64.1

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