ASTROSAT CZTI

Data Quality Report

Orbit 24418

Creation date: 2024-06-27T19:05:49.981091
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/AS1A07_054T01_9000003604_24418cztM0_level2.evt modeM0/AS1A07_054T01_9000003604_24418cztM0_level2_quad_clean.evt
Size (bytes)459,570,240134,245,440
Size438.3 MB 128.0 MB
Events in quadrant A3,001,006914,685
Events in quadrant B3,312,398943,212
Events in quadrant C3,482,571912,610
Events in quadrant D3,706,774868,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129622
B0138402
C0144722
D0152104

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6114160.261694%
B6114681.112202%
C6114691.128557%
D61131091.783085%

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 7479 6115 0 0 0.00% 0.00%
B 7479 6115 18 18 0.24% 0.29%
C 7479 6115 1 1 0.01% 0.02%
D 7478 6114 77 77 1.03% 1.26%

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 13 254 11348 68.67 778 764 154.1
A 0 226 6736 38.75 778 764 154.1
A 3 137 6319 36.04 778 764 154.1
B 3 64 109615 759.65 786 768 143.3
B 15 33 80789 558.47 786 768 143.3
B 0 190 29917 203.43 786 768 143.3
C 7 247 302675 1700.82 772 781 177.5
C 14 238 125007 699.87 772 781 177.5
C 2 16 24082 131.27 772 781 177.5
D 1 52 326762 1779.45 763 741 183.2
D 9 35 226729 1233.46 763 741 183.2
D 12 218 168698 916.72 763 741 183.2

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