ASTROSAT CZTI

Data Quality Report

Orbit 17923

Creation date: 2024-06-27T17:42:39.200287
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_025T01_9000002670_17923cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17923cztM0_level2_quad_clean.evt
Size (bytes)514,321,920126,086,400
Size490.5 MB 120.2 MB
Events in quadrant A3,724,544824,083
Events in quadrant B3,777,322849,191
Events in quadrant C3,706,776802,169
Events in quadrant D3,825,083788,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166582
B0166862
C0164902
D0172742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7977841.053027%
B7978961.203309%
C7978991.240913%
D7978971.215844%

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 9257 7979 8 8 0.09% 0.10%
B 9258 7980 1 1 0.01% 0.01%
C 9258 7980 1 1 0.01% 0.01%
D 9258 7980 55 55 0.59% 0.69%

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 96206 501.81 941 918 189.9
A 2 242 9503 45.21 941 918 189.9
A 0 226 8310 38.93 941 918 189.9
B 12 111 21589 114.94 952 928 179.8
B 11 111 18715 98.95 952 928 179.8
B 4 216 16898 88.84 952 928 179.8
C 14 238 140042 652.32 910 914 213.3
C 3 233 11264 48.53 910 914 213.3
C 13 61 6523 26.3 910 914 213.3
D 7 238 223078 1005.82 913 886 220.9
D 10 70 64270 286.93 913 886 220.9
D 12 110 49471 219.94 913 886 220.9

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