ASTROSAT CZTI

Data Quality Report

Orbit 20151024_P01_888T88_9000000064_level2

Creation date: 2025-01-04T23:54:29.151225
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_888T88_9000000064cztM0_level2.fits modeM0/AS1P01_888T88_9000000064cztM0_level2_quad_clean.evt
Size (bytes)136,071,36038,600,640
Size129.8 MB 36.8 MB
Events in quadrant A787,1208,644
Events in quadrant B780,4548,825
Events in quadrant C784,6047,972
Events in quadrant D634,3387,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0713870
B0701920
C0662550
D0843200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16443360.218938%
B16443340.206775%
C16443380.231101%
D1644312807.784468%

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 24704 16443 0 0 0.00% 0.00%
B 24704 16443 0 0 0.00% 0.00%
C 24704 16444 0 0 0.00% 0.00%
D 24704 16422 0 0 0.00% 0.00%

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 7 110 744 11.2 204 193 49.2
A 0 29 708 10.47 204 193 49.2
A 12 45 557 7.4 204 193 49.2
B 2 9 645 11.86 206 198 37.7
B 14 254 527 8.73 206 198 37.7
B 2 18 510 8.28 206 198 37.7
C 2 127 555 6.92 207 192 52.5
C 12 241 545 6.73 207 192 52.5
C 2 191 540 6.63 207 192 52.5
D 11 82 498 7.32 181 167 45.2
D 6 231 474 6.79 181 167 45.2
D 6 44 462 6.53 181 167 45.2

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