ASTROSAT CZTI

Data Quality Report

Orbit 46898

Creation date: 2024-06-27T23:29:00.803479
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_068T05_9000006280_46898cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46898cztM0_level2_quad_clean.evt
Size (bytes)805,008,96096,880,320
Size767.7 MB 92.4 MB
Events in quadrant A6,898,940731,659
Events in quadrant B14,478,270282,781
Events in quadrant C3,614,947750,171
Events in quadrant D4,258,677676,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250603
B0478812
C0160432
D0177862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70693555.021927%
B7069487268.920639%
C70691672.362428%
D70693144.441930%

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 7689 7071 45 45 0.59% 0.64%
B 7688 7068 4171 4171 54.25% 59.01%
C 7689 7071 122 122 1.59% 1.73%
D 7689 7071 192 192 2.50% 2.72%

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 3769863 23175.45 783 766 162.6
A 7 3 36766 221.36 783 766 162.6
A 13 248 32638 195.97 783 766 162.6
B 3 112 11938214 105561.57 568 551 113.1
B 0 190 116835 1028.27 568 551 113.1
B 5 32 76369 670.44 568 551 113.1
C 12 2 470960 2569.34 776 779 183.0
C 14 254 46879 251.92 776 779 183.0
C 3 233 23682 125.16 776 779 183.0
D 1 52 704540 3700.14 764 742 190.2
D 13 249 325753 1708.71 764 742 190.2
D 2 249 208768 1093.68 764 742 190.2

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