ASTROSAT CZTI

Data Quality Report

Orbit 00906

Creation date: 2024-06-27T14:04:44.410485
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/AS1P01_165T08_9000000182_00906cztM0_level2.evt modeM0/AS1P01_165T08_9000000182_00906cztM0_level2_quad_clean.evt
Size (bytes)1,086,609,60093,905,280
Size1.0 GB 89.6 MB
Events in quadrant A7,556,531623,903
Events in quadrant B9,795,786589,443
Events in quadrant C8,086,605598,221
Events in quadrant D7,045,376585,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269800
B0336860
C0285460
D0254980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6396290.453408%
B63975418.457089%
C6397240.375176%
D6397380.594028%

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 7211 6397 167 167 2.32% 2.61%
B 7212 6398 1065 1065 14.77% 16.65%
C 7212 6398 584 584 8.10% 9.13%
D 7212 6398 133 133 1.84% 2.08%

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 15 127 22707 43.89 1962 1973 472.4
A 11 79 9811 16.59 1962 1973 472.4
A 3 111 6247 9.05 1962 1973 472.4
B 3 0 2087212 4560.4 1939 1949 457.3
B 5 249 96533 206.85 1939 1949 457.3
B 5 200 59995 126.94 1939 1949 457.3
C 9 83 884214 1740.02 1818 1878 507.1
C 15 241 49428 93.77 1818 1878 507.1
C 3 111 23029 41.71 1818 1878 507.1
D 12 188 219915 394.28 1776 1840 553.1
D 2 16 76087 134.24 1776 1840 553.1
D 1 4 41093 70.97 1776 1840 553.1

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