ASTROSAT CZTI

Data Quality Report

Orbit 40723

Creation date: 2024-06-27T22:19:37.349857
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_042T01_9000005560_40723cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40723cztM0_level2_quad_clean.evt
Size (bytes)389,401,92082,814,400
Size371.4 MB 79.0 MB
Events in quadrant A2,718,661578,180
Events in quadrant B2,354,666601,378
Events in quadrant C6,419,331500,553
Events in quadrant D2,526,118471,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110603
B0105132
C0225812
D0111312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5077100.196967%
B5077110.216663%
C507788017.333071%
D507756411.108923%

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 7170 5078 6 6 0.08% 0.12%
B 7170 5078 5 5 0.07% 0.10%
C 7170 5077 872 872 12.16% 17.18%
D 7169 5077 11 11 0.15% 0.22%

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 503578 4411.7 556 543 114.0
A 12 189 33829 291.92 556 543 114.0
A 9 143 26921 231.34 556 543 114.0
B 0 190 50385 469.12 556 539 106.3
B 4 170 40678 377.76 556 539 106.3
B 15 35 15257 138.52 556 539 106.3
C 9 187 4147765 35216.31 508 510 117.8
C 15 214 211882 1794.86 508 510 117.8
C 14 254 57451 483.51 508 510 117.8
D 12 191 178684 1418.6 505 490 125.6
D 2 250 103363 818.97 505 490 125.6
D 2 249 84340 667.53 505 490 125.6

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