ASTROSAT CZTI

Data Quality Report

Orbit 12626

Creation date: 2024-06-27T16:30:11.065720
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/AS1G08_071T01_9000001874_12626cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12626cztM0_level2_quad_clean.evt
Size (bytes)118,480,32028,765,440
Size113.0 MB 27.4 MB
Events in quadrant A753,204193,205
Events in quadrant B815,316197,151
Events in quadrant C745,326195,831
Events in quadrant D1,162,437166,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05218
B05212
C05224
D05218

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054851990
B057742206
C057122265
D083563824

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16391328.053691%
B16211318.081431%
C1613714.401736%
D149516410.969900%

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 2338 1817 0 0 0.00% 0.00%
B 2291 1795 5 5 0.22% 0.28%
C 2352 1792 0 0 0.00% 0.00%
D 2319 1667 75 75 3.23% 4.50%

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 12 189 2043 43.61 195 190 42.5
A 0 226 1761 36.97 195 190 42.5
A 12 194 1507 30.99 195 190 42.5
B 4 239 53578 1338.42 192 187 39.9
B 12 111 4516 108.52 192 187 39.9
B 0 182 4415 105.99 192 187 39.9
C 15 208 14887 328.76 185 185 44.7
C 8 128 3083 64.8 185 185 44.7
C 4 175 2199 45.04 185 185 44.7
D 1 52 321983 7803.9 165 160 41.2
D 10 157 196436 4759.51 165 160 41.2
D 13 249 11488 274.69 165 160 41.2

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