ASTROSAT CZTI

Data Quality Report

Orbit 04661

Creation date: 2024-06-27T14:45:14.070721
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/AS1G05_218T03_9000000582_04661cztM0_level2.evt modeM0/AS1G05_218T03_9000000582_04661cztM0_level2_quad_clean.evt
Size (bytes)13,731,8402,640,960
Size13.1 MB 2.5 MB
Events in quadrant A71,45216,449
Events in quadrant B82,67717,171
Events in quadrant C72,23516,454
Events in quadrant D177,87712,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02941
B03391
C03061
D06121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11710.854701%
B11721.709402%
C11743.418803%
D1174538.461538%

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 117 117 0 0 0.00% 0.00%
B 117 117 0 0 0.00% 0.00%
C 117 117 0 0 0.00% 0.00%
D 117 117 31 31 26.50% 26.50%

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 7 16 1638 291.51 17 17 5.6
A 13 14 391 67.26 17 17 5.6
A 12 194 197 32.37 17 17 5.6
B 4 80 6730 1180.82 18 18 5.7
B 14 167 1227 212.69 18 18 5.7
B 4 172 880 151.65 18 18 5.7
C 7 223 566 91.07 18 18 6.0
C 7 254 151 22.1 18 18 6.0
C 13 61 138 19.94 18 18 6.0
D 13 235 106348 18938.68 15 15 5.6
D 10 15 5025 892.32 15 15 5.6
D 2 234 4053 719.2 15 15 5.6

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