ASTROSAT CZTI

Data Quality Report

Orbit 08804

Creation date: 2024-06-27T15:37:27.973848
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/AS1A03_135T01_9000001226_08804cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08804cztM0_level2_quad_clean.evt
Size (bytes)568,975,680105,865,920
Size542.6 MB 101.0 MB
Events in quadrant A3,955,692690,139
Events in quadrant B4,008,414683,033
Events in quadrant C3,536,222675,971
Events in quadrant D5,211,561624,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167263
B0170455
C0158604
D0207632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76671031.343420%
B76661822.374119%
C7666340.443517%
D76676708.738750%

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 8587 7669 9 9 0.10% 0.12%
B 8587 7670 55 55 0.64% 0.72%
C 8587 7670 0 0 0.00% 0.00%
D 8587 7670 447 447 5.21% 5.83%

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 8 5 345494 1803.22 931 909 191.1
A 13 251 14433 70.77 931 909 191.1
A 5 16 12230 59.24 931 909 191.1
B 10 16 204475 1138.83 928 905 178.8
B 5 255 84971 470.29 928 905 178.8
B 0 231 56281 309.79 928 905 178.8
C 8 128 13315 59.25 898 899 209.5
C 8 112 7184 29.99 898 899 209.5
C 13 61 6847 28.39 898 899 209.5
D 2 16 758192 3494.66 854 831 216.7
D 1 52 614208 2830.28 854 831 216.7
D 2 14 359844 1656.58 854 831 216.7

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