ASTROSAT CZTI

Data Quality Report

Orbit 01258

Creation date: 2024-06-27T14:09:57.719430
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/AS1G04_011T02_9000000226_01258cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01258cztM0_level2_quad_clean.evt
Size (bytes)1,335,133,44093,922,560
Size1.2 GB 89.6 MB
Events in quadrant A7,083,451658,212
Events in quadrant B8,399,380663,843
Events in quadrant C7,399,793648,349
Events in quadrant D17,153,093448,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253292
B0292601
C0262671
D0557091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A606220.032992%
B60621151.897064%
C6062220.362917%
D6062336055.427252%

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 7352 6062 106 106 1.44% 1.75%
B 7352 6062 538 538 7.32% 8.87%
C 7352 6062 133 133 1.81% 2.19%
D 7352 6062 5888 5888 80.09% 97.13%

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 12 133 53204 118.7 1826 1837 432.8
A 14 234 12029 23.55 1826 1837 432.8
A 13 9 9291 17.22 1826 1837 432.8
B 8 4 416146 923.74 1932 1936 448.4
B 15 188 241731 534.77 1932 1936 448.4
B 6 53 186735 412.13 1932 1936 448.4
C 15 241 259998 521.94 1801 1866 494.6
C 9 52 30804 58.51 1801 1866 494.6
C 8 208 28660 54.18 1801 1866 494.6
D 12 22 9615945 22612.65 1382 1427 425.2
D 13 169 1484567 3488.24 1382 1427 425.2
D 10 84 709359 1665.01 1382 1427 425.2

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