ASTROSAT CZTI

Data Quality Report

Orbit 10878

Creation date: 2024-06-27T16:05:04.672244
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/AS1A04_130T01_9000001572_10878cztM0_level2.evt modeM0/AS1A04_130T01_9000001572_10878cztM0_level2_quad_clean.evt
Size (bytes)1,513,157,760221,662,080
Size1.4 GB 211.4 MB
Events in quadrant A9,822,6121,378,051
Events in quadrant B13,528,9811,365,836
Events in quadrant C8,158,3331,400,421
Events in quadrant D13,067,6521,293,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03802
B03806
C03804
D03808

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041961397
B053784862
C038083356
D052386719

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185152221.199028%
B1848116228.776581%
C18524680.367091%
D1847510325.585927%

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 20509 18689 60 60 0.29% 0.32%
B 20509 18672 897 897 4.37% 4.80%
C 20509 18691 1 1 0.00% 0.01%
D 20510 18684 887 887 4.32% 4.75%

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 1369744 3151.54 2138 2091 434.0
A 15 223 83703 188.06 2138 2091 434.0
A 15 239 34810 75.4 2138 2091 434.0
B 4 239 5217191 12995.81 2095 2041 401.3
B 0 187 49759 118.91 2095 2041 401.3
B 12 111 46244 110.15 2095 2041 401.3
C 13 61 15234 27.08 2084 2092 485.3
C 8 128 12989 22.45 2084 2092 485.3
C 14 234 8782 13.78 2084 2092 485.3
D 1 52 4145129 8407.34 2032 1965 492.8
D 5 222 265314 534.39 2032 1965 492.8
D 13 249 229990 462.71 2032 1965 492.8

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