ASTROSAT CZTI

Data Quality Report

Orbit 42714

Creation date: 2024-06-27T22:43:22.146269
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_013T01_9000005822_42714cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42714cztM0_level2_quad_clean.evt
Size (bytes)643,985,280169,162,560
Size614.2 MB 161.3 MB
Events in quadrant A5,790,9651,144,734
Events in quadrant B5,058,3471,149,845
Events in quadrant C4,957,2061,111,983
Events in quadrant D7,209,066980,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233672
B0224183
C0215822
D0286662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10600640.603774%
B10600830.783019%
C1060070.066038%
D106006376.009434%

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 13374 10602 44 44 0.33% 0.42%
B 13374 10602 59 59 0.44% 0.56%
C 13374 10602 2 2 0.01% 0.02%
D 13374 10602 617 617 4.61% 5.82%

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 1042703 4390.13 1157 1133 237.3
A 15 237 138369 578.44 1157 1133 237.3
A 13 248 106935 445.95 1157 1133 237.3
B 5 255 189640 835.72 1149 1115 225.6
B 15 85 91871 402.31 1149 1115 225.6
B 5 172 71944 313.98 1149 1115 225.6
C 15 214 441555 1679.72 1122 1129 262.2
C 3 233 62834 235.33 1122 1129 262.2
C 0 239 27409 100.23 1122 1129 262.2
D 2 249 1717876 6354.65 1103 1072 270.2
D 12 233 250865 924.59 1103 1072 270.2
D 13 249 204995 754.81 1103 1072 270.2

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