ASTROSAT CZTI

Data Quality Report

Orbit 21974

Creation date: 2024-06-27T18:34:45.936331
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_094T01_9000003248_21974cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21974cztM0_level2_quad_clean.evt
Size (bytes)520,853,760102,888,000
Size496.7 MB 98.1 MB
Events in quadrant A3,280,937698,856
Events in quadrant B3,505,635697,292
Events in quadrant C3,241,310662,961
Events in quadrant D5,315,400613,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136531
B0143701
C0134471
D0200791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345831.308117%
B63461292.032777%
C63461161.827923%
D63466029.486291%

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 7540 6345 0 0 0.00% 0.00%
B 7541 6346 17 17 0.23% 0.27%
C 7541 6346 0 0 0.00% 0.00%
D 7541 6346 518 518 6.87% 8.16%

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 2 79 15813 88.58 846 831 169.1
A 13 254 11016 60.22 846 831 169.1
A 0 226 7292 38.2 846 831 169.1
B 3 64 99282 626.71 829 810 157.1
B 0 230 88114 555.64 829 810 157.1
B 0 190 41261 257.45 829 810 157.1
C 14 238 127127 682.35 798 806 185.1
C 13 61 5562 25.69 798 806 185.1
C 10 22 3740 15.85 798 806 185.1
D 7 238 1106843 5801.35 784 761 190.7
D 1 52 889912 4663.56 784 761 190.7
D 12 227 178899 934.33 784 761 190.7

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