ASTROSAT CZTI

Data Quality Report

Orbit 42842

Creation date: 2024-06-27T22:44:54.778138
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/AS1T05_138T01_9000005828_42842cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42842cztM0_level2_quad_clean.evt
Size (bytes)449,781,12094,487,040
Size428.9 MB 90.1 MB
Events in quadrant A3,384,836631,824
Events in quadrant B2,632,490655,737
Events in quadrant C3,851,347642,055
Events in quadrant D6,320,247516,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134902
B0120582
C0152202
D0228712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928420.708502%
B5928100.168691%
C5927701.181036%
D592792115.539059%

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 7241 5929 31 31 0.43% 0.52%
B 7241 5929 4 4 0.06% 0.07%
C 7240 5928 70 70 0.97% 1.18%
D 7240 5928 853 853 11.78% 14.39%

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 10 83 635369 4758.12 642 628 133.4
A 12 189 94289 702.1 642 628 133.4
A 15 237 69631 517.26 642 628 133.4
B 3 112 39607 308.34 643 623 126.4
B 0 245 26111 201.6 643 623 126.4
B 12 111 15690 119.17 643 623 126.4
C 7 220 750501 5004.32 633 637 149.8
C 14 254 336370 2240.56 633 637 149.8
C 15 214 243413 1620.2 633 637 149.8
D 1 52 3194501 21750.94 593 574 146.8
D 2 249 249085 1692.38 593 574 146.8
D 10 118 176162 1195.77 593 574 146.8

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