ASTROSAT CZTI

Data Quality Report

Orbit 22235

Creation date: 2024-06-27T18:38:25.078014
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/AS1T03_147T01_9000003290_22235cztM0_level2.evt modeM0/AS1T03_147T01_9000003290_22235cztM0_level2_quad_clean.evt
Size (bytes)461,882,88089,104,320
Size440.5 MB 85.0 MB
Events in quadrant A3,259,524568,428
Events in quadrant B3,326,659578,198
Events in quadrant C3,341,567549,608
Events in quadrant D3,613,373543,119

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135762
B0137202
C0137322
D0147632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580751.139818%
B6580851.291793%
C65801141.732523%
D65801111.686930%

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 7585 6581 0 0 0.00% 0.00%
B 7585 6581 2 2 0.03% 0.03%
C 7585 6581 0 0 0.00% 0.00%
D 7585 6581 45 45 0.59% 0.68%

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 2 79 16264 93.19 839 822 165.7
A 13 254 9523 52.51 839 822 165.7
A 0 226 7320 39.22 839 822 165.7
B 4 173 37548 235.4 833 813 156.1
B 12 111 18712 114.7 833 813 156.1
B 11 111 16756 102.16 833 813 156.1
C 14 238 128750 670.4 816 821 190.8
C 0 10 23131 116.91 816 821 190.8
C 9 54 10735 51.95 816 821 190.8
D 2 16 185797 936.77 822 799 197.5
D 1 52 176481 889.59 822 799 197.5
D 13 172 74503 373.21 822 799 197.5

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