ASTROSAT CZTI

Data Quality Report

Orbit 06440

Creation date: 2024-06-27T15:07:14.959979
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/AS1A02_191T01_9000000854_06440cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06440cztM0_level2_quad_clean.evt
Size (bytes)659,283,840157,596,480
Size628.7 MB 150.3 MB
Events in quadrant A4,638,2071,032,710
Events in quadrant B4,998,5551,068,555
Events in quadrant C4,452,5231,013,417
Events in quadrant D5,189,597956,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206743
B0214652
C0205412
D0224632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10141120.118332%
B10141420.414160%
C1014170.069027%
D10141480.473326%

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 12766 10143 0 0 0.00% 0.00%
B 12766 10143 14 14 0.11% 0.14%
C 12766 10143 0 0 0.00% 0.00%
D 12766 10143 30 30 0.23% 0.30%

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 15 236 21052 82.96 1193 1169 239.7
A 8 15 14295 54.76 1193 1169 239.7
A 0 226 11505 43.12 1193 1169 239.7
B 11 51 105424 461.88 1206 1180 225.7
B 0 228 59743 259.48 1206 1180 225.7
B 8 3 52465 227.23 1206 1180 225.7
C 13 61 8883 29.71 1139 1145 260.4
C 1 16 6525 20.66 1139 1145 260.4
C 8 222 3124 7.6 1139 1145 260.4
D 11 241 427728 1539.46 1135 1098 277.1
D 2 152 247400 888.76 1135 1098 277.1
D 2 14 55013 194.55 1135 1098 277.1

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