ASTROSAT CZTI

Data Quality Report

Orbit 04452

Creation date: 2024-06-27T14:42:14.007678
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/AS1G05_253T01_9000000560_04452cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04452cztM0_level2_quad_clean.evt
Size (bytes)1,265,181,120214,799,040
Size1.2 GB 204.8 MB
Events in quadrant A9,011,4361,314,077
Events in quadrant B9,765,5521,286,144
Events in quadrant C8,893,6811,295,904
Events in quadrant D9,323,2471,263,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04098651
B04239078
C04051843
D04254952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195321180.604137%
B195181470.753151%
C19535500.255951%
D195322621.341388%

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 22079 19558 28 28 0.13% 0.14%
B 22079 19558 34 34 0.15% 0.17%
C 22079 19558 24 24 0.11% 0.12%
D 22079 19557 215 215 0.97% 1.10%

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 0 13 292496 640.25 2228 2184 453.4
A 0 50 59202 125.75 2228 2184 453.4
A 13 248 44750 93.87 2228 2184 453.4
B 15 204 383816 885.88 2249 2198 430.8
B 15 185 360630 832.05 2249 2198 430.8
B 10 246 107721 244.96 2249 2198 430.8
C 9 16 183839 362.18 2163 2174 501.6
C 14 48 148064 290.86 2163 2174 501.6
C 9 247 60542 116.37 2163 2174 501.6
D 12 227 546844 1044.83 2144 2080 521.4
D 13 239 97617 183.24 2144 2080 521.4
D 9 35 96523 181.14 2144 2080 521.4

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