ASTROSAT CZTI

Data Quality Report

Orbit 38991

Creation date: 2024-06-27T21:59:02.771901
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_095T02_9000005420_38991cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38991cztM0_level2_quad_clean.evt
Size (bytes)631,883,520163,321,920
Size602.6 MB 155.8 MB
Events in quadrant A5,461,6301,090,968
Events in quadrant B4,840,3451,124,297
Events in quadrant C4,715,8491,072,503
Events in quadrant D7,605,888972,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218503
B0209022
C0199282
D0294762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98841531.547956%
B9884870.880210%
C9884140.141643%
D98843013.045326%

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 12509 9886 137 137 1.10% 1.39%
B 12509 9886 54 54 0.43% 0.55%
C 12509 9886 1 1 0.01% 0.01%
D 12509 9886 296 296 2.37% 2.99%

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 636375 2829.7 1117 1093 224.5
A 13 248 452680 2011.48 1117 1093 224.5
A 6 10 32542 140.08 1117 1093 224.5
B 5 172 282274 1300.11 1116 1082 216.3
B 0 199 75422 343.72 1116 1082 216.3
B 15 85 45745 206.5 1116 1082 216.3
C 15 214 400520 1555.07 1099 1105 256.8
C 15 208 15237 55.02 1099 1105 256.8
C 13 61 7558 25.12 1099 1105 256.8
D 2 153 1964575 7402.07 1088 1056 265.3
D 12 235 961529 3620.79 1088 1056 265.3
D 13 249 204976 768.74 1088 1056 265.3

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