ASTROSAT CZTI

Data Quality Report

Orbit 49812

Creation date: 2024-12-13T14:23:56.340494
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_49812cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49812cztM0_level2_quad_clean.evt
Size (bytes)1,072,408,32062,314,560
Size1022.7 MB 59.4 MB
Events in quadrant A6,372,978543,246
Events in quadrant B4,244,036665,910
Events in quadrant C13,844,956112,218
Events in quadrant D14,741,623119,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232201
B0170231
C0455441
D0480821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387103316.173477%
B63874066.356662%
C6387541484.765931%
D6387532883.419446%

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 7452 6387 842 842 11.30% 13.18%
B 7452 6387 218 218 2.93% 3.41%
C 7451 6386 4480 4480 60.13% 70.15%
D 7451 6386 5306 5306 71.21% 83.09%

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 0 98 706577 4222.46 669 655 167.2
A 15 63 434752 2596.54 669 655 167.2
A 5 16 336565 2009.24 669 655 167.2
B 10 28 356849 2375.5 706 683 149.9
B 10 44 307170 2044.16 706 683 149.9
B 5 185 276536 1839.84 706 683 149.9
C 15 147 3982629 41892.97 316 313 95.1
C 15 197 3692823 38844.28 316 313 95.1
C 1 44 2212946 23276.34 316 313 95.1
D 7 61 5022045 40788.14 395 379 123.1
D 15 185 1406848 11423.95 395 379 123.1
D 7 126 1157537 9398.94 395 379 123.1

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