ASTROSAT CZTI

Data Quality Report

Orbit 19877

Creation date: 2024-06-27T18:08:13.279603
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_118T01_9000002962_19877cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19877cztM0_level2_quad_clean.evt
Size (bytes)568,474,560103,132,800
Size542.1 MB 98.4 MB
Events in quadrant A4,510,339660,111
Events in quadrant B4,033,898667,950
Events in quadrant C4,148,216634,881
Events in quadrant D4,002,009625,214

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183612
B0169593
C0172422
D0171022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76941311.702625%
B76932132.768751%
C76932653.444690%
D76941031.338705%

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 8999 7696 50 50 0.56% 0.65%
B 8998 7694 51 51 0.57% 0.66%
C 8998 7694 31 31 0.34% 0.40%
D 8999 7695 40 40 0.44% 0.52%

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 14 238 797200 4065.31 963 944 195.9
A 0 226 8195 37.02 963 944 195.9
A 3 137 8072 36.39 963 944 195.9
B 7 220 138843 746.41 959 938 184.8
B 3 64 94019 503.8 959 938 184.8
B 12 111 23156 120.25 959 938 184.8
C 9 221 370596 1680.6 929 936 220.0
C 14 238 142590 644.01 929 936 220.0
C 7 220 8349 33.7 929 936 220.0
D 1 52 326545 1418.14 943 917 229.6
D 2 184 59222 253.92 943 917 229.6
D 7 238 53619 229.52 943 917 229.6

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