ASTROSAT CZTI

Data Quality Report

Orbit 31665

Creation date: 2024-06-27T20:31:16.745028
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_056T01_9000004626_31665cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31665cztM0_level2_quad_clean.evt
Size (bytes)1,021,593,600154,540,800
Size974.3 MB 147.4 MB
Events in quadrant A6,173,211966,988
Events in quadrant B9,953,644968,435
Events in quadrant C7,308,939925,265
Events in quadrant D6,628,585924,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267653
B0395384
C0296343
D0278613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129561621.250386%
B129552812.169047%
C129553762.902354%
D129551391.072945%

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 14256 12958 3 3 0.02% 0.02%
B 14255 12957 11 11 0.08% 0.08%
C 14255 12957 82 82 0.58% 0.63%
D 14255 12957 11 11 0.08% 0.08%

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 15 174 80150 252.1 1553 1519 311.9
A 12 96 77583 243.87 1553 1519 311.9
A 13 254 21902 65.35 1553 1519 311.9
B 6 159 3473432 11789.5 1536 1496 294.5
B 10 245 125564 421.29 1536 1496 294.5
B 4 80 91510 305.66 1536 1496 294.5
C 3 233 648834 1881.53 1472 1482 344.1
C 0 10 313626 907.25 1472 1482 344.1
C 10 22 304031 879.36 1472 1482 344.1
D 8 195 834684 2347.6 1500 1457 354.9
D 2 234 60352 165.94 1500 1457 354.9
D 2 250 54984 150.81 1500 1457 354.9

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