ASTROSAT CZTI

Data Quality Report

Orbit 04099

Creation date: 2024-06-27T14:37:24.842286
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/AS1G05_191T01_9000000524_04099cztM0_level2.evt modeM0/AS1G05_191T01_9000000524_04099cztM0_level2_quad_clean.evt
Size (bytes)382,645,44069,128,640
Size364.9 MB 65.9 MB
Events in quadrant A2,927,974430,175
Events in quadrant B3,032,695427,767
Events in quadrant C2,565,037427,519
Events in quadrant D2,674,436408,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125522
B0127301
C0116751
D0122291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5712400.700280%
B5712260.455182%
C5712140.245098%
D5712340.595238%

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 6387 5713 10 10 0.16% 0.18%
B 6387 5713 2 2 0.03% 0.04%
C 6387 5713 0 0 0.00% 0.00%
D 6387 5713 30 30 0.47% 0.53%

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 0 199 272694 1994.95 666 655 136.4
A 0 50 31459 225.9 666 655 136.4
A 0 226 31061 222.98 666 655 136.4
B 3 0 312716 2409.27 674 661 129.5
B 10 16 48187 366.93 674 661 129.5
B 14 167 27963 210.79 674 661 129.5
C 8 128 19208 122.18 648 654 151.9
C 8 112 7552 45.42 648 654 151.9
C 8 144 7331 43.97 648 654 151.9
D 13 239 94669 611.03 640 624 153.9
D 10 172 81471 525.28 640 624 153.9
D 2 14 40360 258.17 640 624 153.9

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