ASTROSAT CZTI

Data Quality Report

Orbit 33577

Creation date: 2024-06-27T20:50:21.961932
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/AS1A11_060T01_9000004808_33577cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33577cztM0_level2_quad_clean.evt
Size (bytes)550,978,56088,295,040
Size525.5 MB 84.2 MB
Events in quadrant A2,812,134589,361
Events in quadrant B4,757,382567,149
Events in quadrant C4,530,184567,719
Events in quadrant D4,202,217552,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117033
B0179542
C0174972
D0166122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A567890.158507%
B567867011.799930%
C56781883.311025%
D56781823.205354%

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 7261 5679 0 0 0.00% 0.00%
B 7261 5679 481 481 6.62% 8.47%
C 7261 5679 144 144 1.98% 2.54%
D 7261 5679 157 157 2.16% 2.76%

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 15 169 188651 1377.07 676 662 136.5
A 13 254 10353 70.99 676 662 136.5
A 3 137 7049 46.79 676 662 136.5
B 5 172 1869197 14764.31 643 626 126.6
B 5 255 172318 1356.61 643 626 126.6
B 4 251 49101 383.02 643 626 126.6
C 3 233 1387226 9331.23 639 645 148.6
C 0 10 249172 1672.5 639 645 148.6
C 15 214 240807 1616.21 639 645 148.6
D 8 195 593812 3726.8 644 626 159.2
D 2 250 325120 2038.7 644 626 159.2
D 13 249 176610 1105.65 644 626 159.2

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