ASTROSAT CZTI

Data Quality Report

Orbit 27430

Creation date: 2024-06-27T19:39:59.725750
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/AS1T03_249T01_9000003934_27430cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27430cztM0_level2_quad_clean.evt
Size (bytes)573,462,72094,628,160
Size546.9 MB 90.2 MB
Events in quadrant A3,221,305633,452
Events in quadrant B3,310,975638,679
Events in quadrant C3,388,261603,614
Events in quadrant D7,025,790555,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129780
B0133080
C0135770
D0250860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217300.482548%
B6218530.852364%
C62181041.672564%
D6217115118.513753%

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 7517 6218 0 0 0.00% 0.00%
B 7518 6219 7 7 0.09% 0.11%
C 7518 6219 17 17 0.23% 0.27%
D 7517 6217 1074 1074 14.29% 17.28%

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 13 254 10101 56.08 835 820 165.5
A 0 226 7313 39.23 835 820 165.5
A 3 137 7218 38.66 835 820 165.5
B 0 189 30252 191.12 821 803 154.1
B 12 111 18209 112.96 821 803 154.1
B 0 190 17556 108.73 821 803 154.1
C 14 238 129124 696.75 791 798 184.2
C 2 16 99832 537.71 791 798 184.2
C 7 221 55871 299.02 791 798 184.2
D 1 52 3902207 22400.61 742 724 174.2
D 12 227 187580 1072.84 742 724 174.2
D 2 250 58401 331.15 742 724 174.2

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