ASTROSAT CZTI

Data Quality Report

Orbit 37778

Creation date: 2024-06-27T21:44:18.063540
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/AS1A11_106T02_9000005344_37778cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37778cztM0_level2_quad_clean.evt
Size (bytes)405,676,80071,426,880
Size386.9 MB 68.1 MB
Events in quadrant A2,822,189448,405
Events in quadrant B2,920,306453,359
Events in quadrant C2,668,951451,931
Events in quadrant D3,506,448430,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116873
B0122602
C0112572
D0142422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5414150.277059%
B5414621.145179%
C5414180.332471%
D54142204.063539%

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 7147 5415 8 8 0.11% 0.15%
B 7147 5415 46 46 0.64% 0.85%
C 7147 5415 21 21 0.29% 0.39%
D 7147 5415 193 193 2.70% 3.56%

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 334659 2737.66 609 596 122.0
A 15 222 82973 675.08 609 596 122.0
A 13 6 24639 197.03 609 596 122.0
B 5 255 158142 1387.21 599 583 113.6
B 5 172 151653 1330.08 599 583 113.6
B 0 189 96674 846.02 599 583 113.6
C 15 214 248325 1825.78 587 590 135.7
C 0 10 98995 725.23 587 590 135.7
C 15 159 19244 137.48 587 590 135.7
D 2 249 778834 5477.01 582 566 142.1
D 2 250 132507 928.53 582 566 142.1
D 13 249 118379 829.1 582 566 142.1

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