ASTROSAT CZTI

Data Quality Report

Orbit 06956

Creation date: 2024-06-27T15:13:42.081737
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/AS1A02_090T02_9000000956_06956cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06956cztM0_level2_quad_clean.evt
Size (bytes)333,541,44060,122,880
Size318.1 MB 57.3 MB
Events in quadrant A2,382,854363,101
Events in quadrant B2,477,714367,110
Events in quadrant C2,334,719366,580
Events in quadrant D2,543,861351,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108232
B0109631
C0107951
D0112261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5313250.470544%
B5313360.677583%
C5313250.470544%
D5313350.658762%

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 6138 5314 0 0 0.00% 0.00%
B 6138 5314 3 3 0.05% 0.06%
C 6138 5314 0 0 0.00% 0.00%
D 6138 5314 9 9 0.15% 0.17%

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 8 15 8405 61.81 614 600 126.3
A 4 2 7137 51.77 614 600 126.3
A 13 248 6715 48.42 614 600 126.3
B 4 81 24889 203.7 616 601 119.2
B 0 228 19576 159.14 616 601 119.2
B 5 29 16869 136.44 616 601 119.2
C 12 4 10546 70.98 595 597 140.2
C 13 61 4651 28.92 595 597 140.2
C 3 202 1546 6.77 595 597 140.2
D 8 195 150343 1019.08 596 577 147.0
D 2 14 48507 326.14 596 577 147.0
D 14 173 20089 132.77 596 577 147.0

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