ASTROSAT CZTI

Data Quality Report

Orbit 30978

Creation date: 2024-06-27T20:21:51.684534
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_071T42_9000004476_30978cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30978cztM0_level2_quad_clean.evt
Size (bytes)534,093,12080,876,160
Size509.4 MB 77.1 MB
Events in quadrant A3,180,753524,302
Events in quadrant B5,115,878529,474
Events in quadrant C3,914,344481,663
Events in quadrant D3,543,602480,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130622
B0192132
C0155312
D0145492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211180.289808%
B6211911.465142%
C62112253.622605%
D6211250.402512%

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 7526 6212 0 0 0.00% 0.00%
B 7526 6212 2 2 0.03% 0.03%
C 7526 6212 122 122 1.62% 1.96%
D 7526 6212 13 13 0.17% 0.21%

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 13 254 12045 69.05 823 809 162.7
A 3 137 7816 43.06 823 809 162.7
A 0 226 7107 38.7 823 809 162.7
B 6 159 1775025 11409.68 823 806 155.5
B 0 190 66008 419.3 823 806 155.5
B 12 111 18503 113.81 823 806 155.5
C 0 10 749453 4180.63 770 777 179.1
C 14 238 127036 705.03 770 777 179.1
C 2 114 13987 73.77 770 777 179.1
D 8 195 318578 1700.95 781 761 186.8
D 1 52 105089 558.36 781 761 186.8
D 2 250 102198 542.89 781 761 186.8

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