ASTROSAT CZTI

Data Quality Report

Orbit 25664

Creation date: 2024-06-27T19:20:04.927929
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/AS1A09_006T04_9000003738_25664cztM0_level2.evt modeM0/AS1A09_006T04_9000003738_25664cztM0_level2_quad_clean.evt
Size (bytes)382,014,72065,050,560
Size364.3 MB 62.0 MB
Events in quadrant A2,807,841418,214
Events in quadrant B2,687,152428,121
Events in quadrant C2,623,741399,217
Events in quadrant D3,122,280385,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113500
B0107140
C0104440
D0124930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4830180.372671%
B4830290.600414%
C4830450.931677%
D4830631.304348%

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 4830 4830 1 1 0.02% 0.02%
B 4830 4830 5 5 0.10% 0.10%
C 4830 4830 0 0 0.00% 0.00%
D 4830 4830 37 37 0.77% 0.77%

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 8 192 199134 1478.42 673 664 134.2
A 12 96 11530 80.94 673 664 134.2
A 13 254 7035 47.46 673 664 134.2
B 0 245 32121 250.57 671 656 125.6
B 0 229 19043 146.43 671 656 125.6
B 12 111 14652 111.46 671 656 125.6
C 14 238 105194 702.32 639 643 148.9
C 3 233 15306 98.5 639 643 148.9
C 5 112 10744 67.85 639 643 148.9
D 1 52 433450 2791.53 638 622 155.1
D 8 195 205090 1318.72 638 622 155.1
D 13 104 52150 332.33 638 622 155.1

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