ASTROSAT CZTI

Data Quality Report

Orbit 49839

Creation date: 2024-12-15T10:32:34.045069
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_037T01_9000006440_49839cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49839cztM0_level2_quad_clean.evt
Size (bytes)1,160,285,76039,329,280
Size1.1 GB 37.5 MB
Events in quadrant A13,566,155119,405
Events in quadrant B3,288,206628,022
Events in quadrant C11,764,25811,467
Events in quadrant D13,882,89325,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442221
B0137401
C0389441
D0452301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5807482783.123816%
B58081552.668733%
C5808572598.570937%
D5808561596.676997%

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 6982 5807 4334 4334 62.07% 74.63%
B 6983 5809 36 36 0.52% 0.62%
C 6982 5807 3083 3083 44.16% 53.09%
D 6982 5807 5038 5038 72.16% 86.76%

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 4 4 9001101 79757.76 417 406 112.9
A 3 84 1389247 12306.92 417 406 112.9
A 3 130 236379 2091.02 417 406 112.9
B 0 229 285354 2049.37 648 628 138.9
B 4 206 114228 817.66 648 628 138.9
B 5 185 78143 557.93 648 628 138.9
C 15 230 3779856 77269.67 150 148 48.9
C 15 197 1876810 38365.15 150 148 48.9
C 1 44 1510190 30870.23 150 148 48.9
D 7 61 3541026 62697.61 176 169 56.5
D 8 176 2550126 45151.84 176 169 56.5
D 7 126 2002746 35459.44 176 169 56.5

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