ASTROSAT CZTI

Data Quality Report

Orbit 33892

Creation date: 2024-06-27T20:53:51.381864
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/AS1T04_090T01_9000004840_33892cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33892cztM0_level2_quad_clean.evt
Size (bytes)587,108,16083,831,040
Size559.9 MB 79.9 MB
Events in quadrant A3,754,072547,255
Events in quadrant B3,247,049543,082
Events in quadrant C3,456,465542,263
Events in quadrant D6,916,442486,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152903
B0135482
C0138582
D0247012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60093906.490265%
B6009881.464470%
C60091061.764021%
D600987514.561491%

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 7292 6010 307 307 4.21% 5.11%
B 7292 6010 54 54 0.74% 0.90%
C 7292 6010 69 69 0.95% 1.15%
D 7292 6010 732 732 10.04% 12.18%

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 1107830 8246.31 664 649 134.3
A 7 16 55629 409.49 664 649 134.3
A 13 6 15546 110.95 664 649 134.3
B 5 172 310454 2312.72 689 669 133.9
B 4 81 34702 254.08 689 669 133.9
B 4 170 23213 168.3 689 669 133.9
C 0 10 396469 2523.17 673 678 156.9
C 15 214 261506 1662.78 673 678 156.9
C 3 233 107630 681.82 673 678 156.9
D 1 52 1814712 11403.7 643 625 159.1
D 12 235 982881 6174.65 643 625 159.1
D 8 195 798458 5015.33 643 625 159.1

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