ASTROSAT CZTI

Data Quality Report

Orbit 45880

Creation date: 2024-06-27T23:17:15.603361
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/AS1C07_001T01_9000006136_45880cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45880cztM0_level2_quad_clean.evt
Size (bytes)504,463,68094,507,200
Size481.1 MB 90.1 MB
Events in quadrant A5,028,380655,484
Events in quadrant B7,379,989545,312
Events in quadrant C2,663,933662,636
Events in quadrant D3,150,481592,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01897418
B02598016
C01231414
D01381219

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58071061.825383%
B5810149425.714286%
C5807540.929912%
D58031392.395313%

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 7000 5815 8 8 0.11% 0.14%
B 7001 5815 1031 1031 14.73% 17.73%
C 7001 5815 35 35 0.50% 0.60%
D 7001 5812 106 106 1.51% 1.82%

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 10 83 2528221 19256.03 639 626 131.3
A 13 254 8713 61.61 639 626 131.3
A 4 0 8005 56.22 639 626 131.3
B 3 112 4876965 43582.64 581 565 111.9
B 4 171 92658 823.08 581 565 111.9
B 5 172 32007 281.01 581 565 111.9
C 12 2 180459 1230.45 628 630 146.1
C 3 233 13861 90.53 628 630 146.1
C 0 207 11622 75.21 628 630 146.1
D 1 52 225872 1477.64 617 600 152.5
D 13 249 206806 1352.58 617 600 152.5
D 2 249 131536 858.86 617 600 152.5

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