ASTROSAT CZTI

Data Quality Report

Orbit 44578

Creation date: 2024-06-27T23:04:09.511114
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/AS1A13_003T01_9000006002_44578cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44578cztM0_level2_quad_clean.evt
Size (bytes)679,178,880138,021,120
Size647.7 MB 131.6 MB
Events in quadrant A6,110,459959,968
Events in quadrant B5,241,009963,186
Events in quadrant C5,738,655895,499
Events in quadrant D7,389,076767,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258761
B0213111
C0229561
D0278291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85391832.143108%
B85394365.105984%
C85396147.190538%
D8539115013.467619%

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 9624 8539 3 3 0.03% 0.04%
B 9624 8539 259 259 2.69% 3.03%
C 9624 8540 535 535 5.56% 6.26%
D 9624 8539 1048 1048 10.89% 12.27%

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 2273305 11186.56 980 958 203.1
A 7 3 16825 78.11 980 958 203.1
A 10 248 12642 57.52 980 958 203.1
B 4 171 843216 4504.75 962 934 187.0
B 5 172 349574 1864.62 962 934 187.0
B 0 186 175397 933.08 962 934 187.0
C 15 208 1603781 7409.1 931 938 216.3
C 14 254 235231 1083.01 931 938 216.3
C 3 233 157706 724.66 931 938 216.3
D 13 249 2912647 13122.31 888 861 221.9
D 1 52 412715 1856.07 888 861 221.9
D 13 174 282246 1268.09 888 861 221.9

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