ASTROSAT CZTI

Data Quality Report

Orbit 25575

Creation date: 2024-06-27T19:19:10.613042
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_043T02_9000003726_25575cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25575cztM0_level2_quad_clean.evt
Size (bytes)515,456,64072,694,080
Size491.6 MB 69.3 MB
Events in quadrant A3,372,655456,511
Events in quadrant B3,444,847469,438
Events in quadrant C3,335,573430,704
Events in quadrant D5,032,050406,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137010
B0139840
C0135890
D0192930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284240.381922%
B6284300.477403%
C6284610.970719%
D62842744.360280%

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 7544 6285 0 0 0.00% 0.00%
B 7544 6285 1 1 0.01% 0.02%
C 7544 6285 0 0 0.00% 0.00%
D 7544 6285 204 204 2.70% 3.25%

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 6 16 38816 220.8 864 850 171.9
A 13 254 10019 53.32 864 850 171.9
A 0 226 7526 38.83 864 850 171.9
B 3 112 24226 144.88 862 845 161.4
B 0 219 20842 123.91 862 845 161.4
B 12 111 18757 110.99 862 845 161.4
C 14 238 133125 705.99 808 813 187.4
C 3 233 34429 179.37 808 813 187.4
C 8 128 10091 49.51 808 813 187.4
D 1 52 1386235 7147.8 798 778 193.8
D 8 195 531884 2740.06 798 778 193.8
D 2 244 61573 313.65 798 778 193.8

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