ASTROSAT CZTI

Data Quality Report

Orbit 20426

Creation date: 2024-06-27T18:15:16.740810
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_188T01_9000003018_20426cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20426cztM0_level2_quad_clean.evt
Size (bytes)588,718,08089,176,320
Size561.4 MB 85.0 MB
Events in quadrant A3,221,472587,996
Events in quadrant B3,349,475592,020
Events in quadrant C3,281,783570,618
Events in quadrant D7,525,629485,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135882
B0138642
C0136192
D0267092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6648370.556558%
B6648701.052948%
C6648941.413959%
D6648153423.074609%

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 7558 6649 0 0 0.00% 0.00%
B 7558 6649 1 1 0.01% 0.02%
C 7558 6649 0 0 0.00% 0.00%
D 7558 6649 1512 1512 20.01% 22.74%

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 0 226 7161 38.06 837 820 166.6
A 3 137 6875 36.34 837 820 166.6
A 13 254 6041 31.33 837 820 166.6
B 4 216 32187 198.81 831 810 157.8
B 10 245 27101 166.58 831 810 157.8
B 12 111 19303 117.17 831 810 157.8
C 14 238 129625 692.39 804 810 186.0
C 3 233 14802 75.21 804 810 186.0
C 13 61 5662 26.08 804 810 186.0
D 1 52 4292071 23661.89 754 732 181.4
D 2 165 200775 1103.01 754 732 181.4
D 13 153 140215 769.09 754 732 181.4

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