ASTROSAT CZTI

Data Quality Report

Orbit 17846

Creation date: 2024-06-27T17:42:00.018095
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_101T06_9000002656_17846cztM0_level2.evt modeM0/AS1A05_101T06_9000002656_17846cztM0_level2_quad_clean.evt
Size (bytes)82,008,00023,696,640
Size78.2 MB 22.6 MB
Events in quadrant A576,061162,481
Events in quadrant B666,772168,090
Events in quadrant C534,240158,003
Events in quadrant D635,436151,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023481
B026391
C021801
D025531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100090.900000%
B1000181.800000%
C1000141.400000%
D100050.500000%

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 1001 1001 4 4 0.40% 0.40%
B 1001 1001 6 6 0.60% 0.60%
C 1001 1001 0 0 0.00% 0.00%
D 1001 1001 1 1 0.10% 0.10%

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 15 174 25759 849.87 140 138 30.1
A 14 238 6485 210.53 140 138 30.1
A 0 226 1310 38.88 140 138 30.1
B 15 35 60842 2136.56 142 139 28.4
B 0 244 15148 528.27 142 139 28.4
B 0 189 7626 263.52 142 139 28.4
C 14 238 21119 656.53 130 131 32.0
C 3 233 1372 38.82 130 131 32.0
C 1 16 1359 38.41 130 131 32.0
D 7 238 105751 2922.09 130 126 36.1
D 15 0 16013 439.51 130 126 36.1
D 2 234 4809 129.55 130 126 36.1

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