ASTROSAT CZTI

Data Quality Report

Orbit 13930

Creation date: 2024-06-27T16:48:04.711688
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/AS1G08_076T01_9000002056_13930cztM0_level2.evt modeM0/AS1G08_076T01_9000002056_13930cztM0_level2_quad_clean.evt
Size (bytes)324,898,56055,961,280
Size309.8 MB 53.4 MB
Events in quadrant A2,050,562337,813
Events in quadrant B2,151,783342,162
Events in quadrant C2,097,962357,046
Events in quadrant D3,226,301334,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094291
B095951
C094551
D0126371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45901473.202614%
B45901663.616558%
C4590982.135076%
D45902435.294118%

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 4721 4592 0 0 0.00% 0.00%
B 4721 4592 0 0 0.00% 0.00%
C 4721 4592 0 0 0.00% 0.00%
D 4721 4592 120 120 2.54% 2.61%

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 1 162 11447 99.99 527 514 109.3
A 0 226 4785 39.06 527 514 109.3
A 12 194 4115 32.93 527 514 109.3
B 0 189 31230 303.07 525 510 101.4
B 10 245 20878 200.94 525 510 101.4
B 0 214 19378 186.15 525 510 101.4
C 3 233 80875 665.94 517 518 120.7
C 13 61 3676 26.17 517 518 120.7
C 12 4 1206 5.7 517 518 120.7
D 1 52 727893 5963.2 509 494 122.0
D 12 110 294982 2414.21 509 494 122.0
D 13 189 107088 873.86 509 494 122.0

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