ASTROSAT CZTI

Data Quality Report

Orbit 38377

Creation date: 2024-06-27T21:51:47.451271
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_005T08_9000005380_38377cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38377cztM0_level2_quad_clean.evt
Size (bytes)354,297,60089,856,000
Size337.9 MB 85.7 MB
Events in quadrant A2,755,683609,883
Events in quadrant B2,604,909621,347
Events in quadrant C2,630,552604,445
Events in quadrant D4,732,974533,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112613
B0108782
C0108172
D0175522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021230.458076%
B5021210.418243%
C5021310.617407%
D50213336.632145%

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 7084 5022 11 11 0.16% 0.22%
B 7084 5022 15 15 0.21% 0.30%
C 7084 5022 19 19 0.27% 0.38%
D 7084 5022 315 315 4.45% 6.27%

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 383793 3293.68 575 564 116.4
A 9 143 91086 778.0 575 564 116.4
A 12 16 26229 220.58 575 564 116.4
B 0 183 164374 1470.73 575 560 111.4
B 4 171 28812 253.65 575 560 111.4
B 0 229 22797 199.64 575 560 111.4
C 15 214 213287 1615.19 567 574 131.7
C 14 254 123302 931.91 567 574 131.7
C 15 159 34381 256.71 567 574 131.7
D 10 203 769103 5724.06 552 538 134.3
D 12 227 634356 4720.5 552 538 134.3
D 12 235 301477 2241.31 552 538 134.3

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