ASTROSAT CZTI

Data Quality Report

Orbit 00575

Creation date: 2024-06-27T13:59:56.118389
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/AS1P01_014T01_9000000080_00575cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00575cztM0_level2_quad_clean.evt
Size (bytes)737,193,60069,958,080
Size703.0 MB 66.7 MB
Events in quadrant A5,691,661443,552
Events in quadrant B5,766,991446,584
Events in quadrant C5,367,330449,366
Events in quadrant D5,171,742433,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204323
B0206392
C0194412
D0189332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492460.121852%
B492470.142161%
C492490.182778%
D4924210.426483%

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 7080 4925 97 97 1.37% 1.97%
B 7080 4925 87 87 1.23% 1.77%
C 7080 4925 57 57 0.81% 1.16%
D 7080 4925 83 83 1.17% 1.69%

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 0 149 57522 173.1 1442 1423 324.1
A 0 238 31140 91.69 1442 1423 324.1
A 0 69 22449 64.88 1442 1423 324.1
B 4 206 47576 133.27 1463 1472 345.9
B 8 4 36621 101.61 1463 1472 345.9
B 15 185 25341 69.0 1463 1472 345.9
C 5 249 125043 338.85 1308 1355 365.0
C 3 159 37866 100.02 1308 1355 365.0
C 15 241 34821 91.68 1308 1355 365.0
D 13 221 137313 355.02 1230 1279 383.2
D 1 4 53808 137.09 1230 1279 383.2
D 13 216 41781 105.7 1230 1279 383.2

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