ASTROSAT CZTI

Data Quality Report

Orbit 18112

Creation date: 2024-06-27T17:45:06.652552
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/AS1A05_019T01_9000002688_18112cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18112cztM0_level2_quad_clean.evt
Size (bytes)694,500,480107,118,720
Size662.3 MB 102.2 MB
Events in quadrant A4,864,729691,655
Events in quadrant B3,991,703717,166
Events in quadrant C3,667,707681,602
Events in quadrant D7,984,688614,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197782
B0169962
C0160432
D0288952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77445296.831095%
B77441361.756198%
C77441151.485021%
D7744122415.805785%

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 7924 7746 237 237 2.99% 3.06%
B 7924 7746 20 20 0.25% 0.26%
C 7924 7746 0 0 0.00% 0.00%
D 7924 7745 1014 1014 12.80% 13.09%

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 4 2 1214531 6446.17 920 898 188.3
A 15 174 113785 599.6 920 898 188.3
A 0 226 7980 37.62 920 898 188.3
B 5 172 112273 618.14 934 909 180.2
B 7 220 104111 572.83 934 909 180.2
B 3 64 37195 201.41 934 909 180.2
C 14 238 137158 639.37 897 901 213.1
C 0 207 18139 80.89 897 901 213.1
C 3 233 13690 60.01 897 901 213.1
D 7 238 3646677 17132.44 866 839 212.8
D 13 104 277223 1298.78 866 839 212.8
D 1 52 254881 1193.79 866 839 212.8

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