ASTROSAT CZTI

Data Quality Report

Orbit 34493

Creation date: 2022-02-13T17:29:50.847413
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/AS1A05_156T01_9000004928_34493cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34493cztM0_level2_quad_clean.evt
Size (bytes)112,803,8408,248,320
Size107.6 MB 7.9 MB
Events in quadrant A721,66139,755
Events in quadrant B913,34839,592
Events in quadrant C730,85839,173
Events in quadrant D963,91137,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029132
B035241
C029421
D036891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123530.242915%
B1235806.477733%
C123530.242915%
D1235191.538462%

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 3180 1236 1 1 0.03% 0.08%
B 3180 1236 57 57 1.79% 4.61%
C 3180 1236 3 3 0.09% 0.24%
D 3180 1236 10 10 0.31% 0.81%

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 16749 451.36 177 174 36.7
A 9 143 14167 381.04 177 174 36.7
A 13 6 5127 134.88 177 174 36.7
B 5 172 223227 6705.35 167 164 33.3
B 0 189 19642 585.52 167 164 33.3
B 0 190 4158 120.06 167 164 33.3
C 15 214 56307 1425.11 166 168 39.4
C 0 10 17973 451.99 166 168 39.4
C 14 67 5218 128.2 166 168 39.4
D 8 195 182184 4308.56 168 163 42.2
D 12 6 61674 1456.01 168 163 42.2
D 10 199 19457 456.7 168 163 42.2

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