ASTROSAT CZTI

Data Quality Report

Orbit 06930

Creation date: 2024-06-27T15:13:12.142939
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/AS1A02_005T01_9000000948_06930cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06930cztM0_level2_quad_clean.evt
Size (bytes)666,380,16074,986,560
Size635.5 MB 71.5 MB
Events in quadrant A2,804,202499,137
Events in quadrant B3,196,104503,500
Events in quadrant C10,590,615367,194
Events in quadrant D3,179,552476,514

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123572
B0133161
C0355491
D0134271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6060470.775578%
B6060971.600660%
C6060321453.036304%
D6060520.858086%

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 7175 6061 0 0 0.00% 0.00%
B 7175 6061 36 36 0.50% 0.59%
C 7175 6061 2667 2667 37.17% 44.00%
D 7175 6061 13 13 0.18% 0.21%

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 14 7717 47.55 723 708 147.4
A 0 226 6939 42.28 723 708 147.4
A 12 194 6758 41.05 723 708 147.4
B 4 48 152875 1107.86 716 700 137.4
B 0 228 118151 855.07 716 700 137.4
B 4 81 96438 696.99 716 700 137.4
C 9 247 8589983 72419.88 509 511 118.6
C 14 67 4929 37.25 509 511 118.6
C 12 4 4701 35.33 509 511 118.6
D 2 136 213440 1234.56 699 678 172.3
D 8 195 85411 491.67 699 678 172.3
D 12 233 76732 441.31 699 678 172.3

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