ASTROSAT CZTI

Data Quality Report

Orbit 01107

Creation date: 2024-06-27T14:07:33.287107
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/AS1P01_997T02_9000000212_01107cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01107cztM0_level2_quad_clean.evt
Size (bytes)1,130,247,360107,190,720
Size1.1 GB 102.2 MB
Events in quadrant A8,349,340696,331
Events in quadrant B8,775,835695,325
Events in quadrant C8,634,685678,999
Events in quadrant D7,990,714672,856

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298883
B0311582
C0307702
D0288972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A721750.069281%
B7217110.152418%
C721730.041569%
D7217340.471110%

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 7882 7218 141 141 1.79% 1.95%
B 7882 7218 194 194 2.46% 2.69%
C 7882 7218 161 161 2.04% 2.23%
D 7882 7218 207 207 2.63% 2.87%

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 13 147 17491 29.32 2171 2184 522.2
A 11 79 9444 13.9 2171 2184 522.2
A 3 111 6880 8.99 2171 2184 522.2
B 2 32 75136 136.65 2266 2277 533.2
B 5 249 42962 76.31 2266 2277 533.2
B 15 85 15640 25.06 2266 2277 533.2
C 15 241 346626 593.95 2078 2153 580.0
C 10 207 126685 214.72 2078 2153 580.0
C 3 111 25600 40.43 2078 2153 580.0
D 2 216 279003 444.69 2011 2081 622.7
D 10 215 83908 131.4 2011 2081 622.7
D 10 125 41099 62.66 2011 2081 622.7

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