ASTROSAT CZTI

Data Quality Report

Orbit 10937

Creation date: 2024-06-27T16:05:56.957241
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/AS1C03_013T01_9000001586_10937cztM0_level2.evt modeM0/AS1C03_013T01_9000001586_10937cztM0_level2_quad_clean.evt
Size (bytes)159,742,08029,759,040
Size152.3 MB 28.4 MB
Events in quadrant A817,877206,880
Events in quadrant B947,241211,308
Events in quadrant C741,595207,758
Events in quadrant D2,217,314153,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035672
B038871
C033541
D077241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163350.306185%
B1633201.224740%
C163350.306185%
D163359736.558481%

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 1633 1633 1 1 0.06% 0.06%
B 1633 1633 13 13 0.80% 0.80%
C 1633 1633 1 1 0.06% 0.06%
D 1632 1632 540 540 33.09% 33.09%

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 15 223 50878 1253.38 189 185 40.4
A 15 239 17179 420.17 189 185 40.4
A 8 5 10290 249.84 189 185 40.4
B 4 239 186316 4861.09 189 185 38.3
B 4 81 9994 256.18 189 185 38.3
B 0 214 7452 189.79 189 185 38.3
C 14 234 27289 616.02 182 183 44.0
C 13 61 1364 26.84 182 183 44.0
C 8 222 660 10.84 182 183 44.0
D 1 52 1648101 45492.21 145 141 36.2
D 2 14 7340 198.73 145 141 36.2
D 13 249 5456 146.72 145 141 36.2

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