ASTROSAT CZTI

Data Quality Report

Orbit 40965

Creation date: 2024-06-27T22:22:46.374647
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/AS1A12_052T04_9000005582_40965cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40965cztM0_level2_quad_clean.evt
Size (bytes)276,166,08087,024,960
Size263.4 MB 83.0 MB
Events in quadrant A2,660,592583,976
Events in quadrant B2,233,426595,090
Events in quadrant C2,411,665567,533
Events in quadrant D2,518,073530,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109272
B0102721
C0104181
D0111531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511160.117394%
B511150.097828%
C5111120.234788%
D5111340.665232%

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 6933 5112 2 2 0.03% 0.04%
B 6933 5112 0 0 0.00% 0.00%
C 6933 5112 7 7 0.10% 0.14%
D 6933 5112 25 25 0.36% 0.49%

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 406675 3451.17 572 560 117.7
A 2 79 29854 248.94 572 560 117.7
A 12 189 10991 88.64 572 560 117.7
B 12 111 13691 120.2 564 548 109.3
B 11 111 12667 110.84 564 548 109.3
B 14 111 12139 106.01 564 548 109.3
C 15 214 218041 1704.64 550 552 127.6
C 0 10 44195 342.06 550 552 127.6
C 14 254 4724 32.7 550 552 127.6
D 2 249 99954 731.03 555 539 136.0
D 12 217 99671 728.95 555 539 136.0
D 13 171 76800 560.77 555 539 136.0

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