ASTROSAT CZTI

Data Quality Report

Orbit 34616

Creation date: 2022-02-22T01:21:43.982466
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_046T09_9000004952_34616cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34616cztM0_level2_quad_clean.evt
Size (bytes)156,896,64029,194,560
Size149.6 MB 27.8 MB
Events in quadrant A876,299195,552
Events in quadrant B1,362,079186,192
Events in quadrant C945,435191,684
Events in quadrant D1,447,814183,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037931
B051951
C038201
D054701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1733140.807848%
B173317410.040392%
C1733412.365840%
D1733583.346797%

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 1733 1733 11 11 0.63% 0.63%
B 1733 1733 118 118 6.81% 6.81%
C 1733 1733 27 27 1.56% 1.56%
D 1733 1733 50 50 2.89% 2.89%

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 15 169 80377 1928.53 196 192 41.6
A 10 83 21457 511.44 196 192 41.6
A 9 143 6667 155.73 196 192 41.6
B 5 172 547274 14017.45 191 187 39.0
B 4 232 29970 763.1 191 187 39.0
B 5 255 17005 430.91 191 187 39.0
C 0 10 90979 1947.44 193 195 46.6
C 15 214 74024 1583.74 193 195 46.6
C 0 207 15498 328.27 193 195 46.6
D 8 195 335815 6692.11 191 186 50.2
D 10 230 85337 1697.83 191 186 50.2
D 2 250 60714 1206.87 191 186 50.2

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