ASTROSAT CZTI

Data Quality Report

Orbit 18956

Creation date: 2024-06-27T17:57:03.214621
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/AS1A05_205T01_9000002824_18956cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18956cztM0_level2_quad_clean.evt
Size (bytes)553,680,00098,985,600
Size528.0 MB 94.4 MB
Events in quadrant A3,559,620649,574
Events in quadrant B5,990,316628,361
Events in quadrant C3,153,177638,424
Events in quadrant D3,612,714616,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148452
B0221962
C0135452
D0153162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66671131.694915%
B666796114.414279%
C6667380.569972%
D6667681.019949%

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 7627 6668 78 78 1.02% 1.17%
B 7627 6668 537 537 7.04% 8.05%
C 7627 6668 0 0 0.00% 0.00%
D 7627 6668 51 51 0.67% 0.76%

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 14 235 482103 2961.31 798 781 162.5
A 13 254 8374 46.71 798 781 162.5
A 0 226 6785 36.94 798 781 162.5
B 3 112 2811554 19044.28 760 739 147.6
B 0 189 94504 635.29 760 739 147.6
B 7 220 78029 523.67 760 739 147.6
C 14 238 120517 655.57 773 778 182.6
C 3 233 15237 79.16 773 778 182.6
C 13 61 5503 25.87 773 778 182.6
D 7 238 382552 1996.4 776 754 191.2
D 12 218 131028 681.2 776 754 191.2
D 1 52 56229 290.08 776 754 191.2

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