ASTROSAT CZTI

Data Quality Report

Orbit 22711

Creation date: 2024-06-27T18:44:42.567397
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/AS1A08_007T01_9000003362_22711cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22711cztM0_level2_quad_clean.evt
Size (bytes)471,709,44082,877,760
Size449.9 MB 79.0 MB
Events in quadrant A3,322,150536,026
Events in quadrant B3,396,137538,525
Events in quadrant C3,327,534506,885
Events in quadrant D3,825,451501,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135421
B0137881
C0136411
D0154021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100991.622951%
B6101941.540731%
C61011442.360269%
D61011041.704639%

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 7440 6101 0 0 0.00% 0.00%
B 7441 6102 3 3 0.04% 0.05%
C 7441 6102 5 5 0.07% 0.08%
D 7441 6102 27 27 0.36% 0.44%

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 11 47 34179 199.23 851 838 167.4
A 13 254 11350 62.81 851 838 167.4
A 0 226 7694 40.97 851 838 167.4
B 0 219 34809 224.19 835 818 151.6
B 0 190 31346 201.35 835 818 151.6
B 0 245 25050 159.83 835 818 151.6
C 14 238 129230 708.59 800 806 181.2
C 9 54 60471 329.21 800 806 181.2
C 10 22 16882 88.7 800 806 181.2
D 12 227 384914 1952.81 826 805 196.7
D 1 52 145915 737.74 826 805 196.7
D 12 233 81142 408.43 826 805 196.7

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