ASTROSAT CZTI

Data Quality Report

Orbit 35835

Creation date: 2024-06-27T21:18:48.433822
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/AS1A10_071T19_9000005144_35835cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35835cztM0_level2_quad_clean.evt
Size (bytes)744,269,76070,248,960
Size709.8 MB 67.0 MB
Events in quadrant A11,186,396266,870
Events in quadrant B3,371,836486,153
Events in quadrant C3,360,377477,029
Events in quadrant D4,197,445458,280

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375282
B0141012
C0137992
D0167862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6265362757.893057%
B6265570.909816%
C6265831.324820%
D62653034.836393%

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 8892 6267 3403 3403 38.27% 54.30%
B 8892 6267 45 45 0.51% 0.72%
C 8892 6267 73 73 0.82% 1.16%
D 8892 6267 280 280 3.15% 4.47%

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 9190819 94358.56 477 469 97.4
A 10 83 102057 1043.02 477 469 97.4
A 10 248 25400 255.97 477 469 97.4
B 5 255 140635 1010.88 718 700 138.4
B 5 172 121255 870.88 718 700 138.4
B 4 232 115007 825.74 718 700 138.4
C 15 214 259736 1568.16 704 707 165.2
C 0 10 225663 1361.88 704 707 165.2
C 0 207 122715 738.64 704 707 165.2
D 2 250 648319 3784.88 696 678 171.1
D 13 249 508581 2968.24 696 678 171.1
D 8 195 72626 420.47 696 678 171.1

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