ASTROSAT CZTI

Data Quality Report

Orbit 22377

Creation date: 2024-06-27T18:40:01.236311
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_007T04_9000003310_22377cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22377cztM0_level2_quad_clean.evt
Size (bytes)633,093,12093,479,040
Size603.8 MB 89.1 MB
Events in quadrant A3,062,530653,724
Events in quadrant B3,178,079678,064
Events in quadrant C3,180,080639,653
Events in quadrant D9,338,633432,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129162
B0131902
C0132232
D0318562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6102210.344149%
B6102350.573582%
C6102651.065225%
D6102249740.921010%

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 7472 6103 0 0 0.00% 0.00%
B 7472 6103 0 0 0.00% 0.00%
C 7472 6103 0 0 0.00% 0.00%
D 7472 6102 2421 2421 32.40% 39.68%

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 13 254 9289 53.74 794 777 158.4
A 0 226 6732 37.6 794 777 158.4
A 3 137 6248 34.54 794 777 158.4
B 3 64 18604 120.67 801 782 147.7
B 0 245 17465 112.96 801 782 147.7
B 12 111 17056 110.19 801 782 147.7
C 14 238 123517 684.63 776 784 179.3
C 0 10 17191 91.52 776 784 179.3
C 10 22 8224 41.5 776 784 179.3
D 1 52 6913815 47849.1 605 589 144.5
D 13 172 69781 478.9 605 589 144.5
D 7 223 29611 200.87 605 589 144.5

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