ASTROSAT CZTI

Data Quality Report

Orbit 46806

Creation date: 2024-06-27T23:27:53.340224
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_074T06_9000006270_46806cztM0_level2.fits modeM0/AS1A13_074T06_9000006270_46806cztM0_level2_quad_clean.evt
Size (bytes)508,740,480108,244,800
Size485.2 MB 103.2 MB
Events in quadrant A6,616,343723,241
Events in quadrant B3,419,084758,554
Events in quadrant C3,090,225716,014
Events in quadrant D5,198,964623,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240465
B0145682
C0139832
D0197712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65422994.570468%
B65421101.681443%
C6543881.344949%
D65435097.779306%

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 7682 6543 69 69 0.90% 1.05%
B 7682 6543 11 11 0.14% 0.17%
C 7683 6544 39 39 0.51% 0.60%
D 7683 6544 313 313 4.07% 4.78%

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 3616437 22877.55 753 738 158.0
A 13 248 30879 190.71 753 738 158.0
A 9 191 22828 139.77 753 738 158.0
B 15 36 132589 875.2 752 730 150.7
B 3 112 111877 737.73 752 730 150.7
B 5 172 53869 352.7 752 730 150.7
C 14 254 173097 989.39 736 740 174.2
C 3 233 18547 102.22 736 740 174.2
C 0 207 13997 76.1 736 740 174.2
D 2 37 1008574 5536.82 715 693 182.0
D 1 52 747912 4104.87 715 693 182.0
D 13 249 385586 2114.42 715 693 182.0

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