ASTROSAT CZTI

Data Quality Report

Orbit 25741

Creation date: 2024-06-27T19:21:00.680583
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/AS1A09_033T01_9000003750_25741cztM0_level2.evt modeM0/AS1A09_033T01_9000003750_25741cztM0_level2_quad_clean.evt
Size (bytes)1,256,235,840234,043,200
Size1.2 GB 223.2 MB
Events in quadrant A8,834,5611,470,548
Events in quadrant B9,250,3881,503,925
Events in quadrant C9,008,9071,441,860
Events in quadrant D9,722,2071,419,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376830
B0390730
C0378970
D0403660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181665302.917538%
B181665843.214797%
C181665643.104701%
D181665152.834966%

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 19136 18166 0 0 0.00% 0.00%
B 19136 18166 6 6 0.03% 0.03%
C 19136 18168 0 0 0.00% 0.00%
D 19136 18167 52 52 0.27% 0.29%

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 0 13 31887 64.47 2281 2224 460.1
A 13 254 26898 53.63 2281 2224 460.1
A 3 137 21302 41.46 2281 2224 460.1
B 3 112 192450 438.75 2260 2202 433.6
B 15 222 60115 133.56 2260 2202 433.6
B 4 171 59902 133.07 2260 2202 433.6
C 14 238 348067 673.8 2197 2210 513.3
C 3 233 65001 122.33 2197 2210 513.3
C 8 128 16853 28.53 2197 2210 513.3
D 1 52 680217 1253.94 2242 2177 540.7
D 8 195 175881 321.24 2242 2177 540.7
D 7 80 162967 297.36 2242 2177 540.7

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