ASTROSAT CZTI

Data Quality Report

Orbit 33501

Creation date: 2024-06-27T20:49:32.452000
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/AS1A11_060T01_9000004804_33501cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33501cztM0_level2_quad_clean.evt
Size (bytes)535,726,08078,356,160
Size510.9 MB 74.7 MB
Events in quadrant A2,717,588501,586
Events in quadrant B3,428,679495,323
Events in quadrant C5,437,675484,700
Events in quadrant D4,237,547475,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119623
B0139662
C0202622
D0166652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595760.100722%
B59571722.887359%
C59572574.314252%
D59571001.678697%

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 7239 5958 0 0 0.00% 0.00%
B 7239 5958 124 124 1.71% 2.08%
C 7239 5957 247 247 3.41% 4.15%
D 7239 5958 88 88 1.22% 1.48%

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 6 10330 68.77 700 686 140.2
A 13 254 8956 58.97 700 686 140.2
A 3 137 7173 46.26 700 686 140.2
B 5 172 515260 3812.63 690 671 135.0
B 5 255 154858 1142.38 690 671 135.0
B 4 251 26065 188.15 690 671 135.0
C 4 254 2109992 13419.18 672 677 157.2
C 15 214 257337 1632.84 672 677 157.2
C 3 233 203812 1292.32 672 677 157.2
D 8 195 1015807 6064.07 678 659 167.4
D 2 250 269146 1603.83 678 659 167.4
D 13 249 158783 944.57 678 659 167.4

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