ASTROSAT CZTI

Data Quality Report

Orbit 13914

Creation date: 2024-06-27T16:47:50.381484
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_012T02_9000002050_13914cztM0_level2.evt modeM0/AS1A04_012T02_9000002050_13914cztM0_level2_quad_clean.evt
Size (bytes)598,844,16094,095,360
Size571.1 MB 89.7 MB
Events in quadrant A4,537,415575,067
Events in quadrant B3,826,053586,259
Events in quadrant C3,756,779589,868
Events in quadrant D5,487,490556,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187623
B0165382
C0164152
D0216062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77883484.468413%
B77882893.710837%
C77881582.028762%
D77883564.571135%

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 8354 7790 101 101 1.21% 1.30%
B 8354 7790 3 3 0.04% 0.04%
C 8354 7790 0 0 0.00% 0.00%
D 8354 7789 142 142 1.70% 1.82%

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 9 143 835979 4293.01 952 929 194.5
A 8 15 19941 97.74 952 929 194.5
A 1 162 14878 71.71 952 929 194.5
B 4 173 32364 168.04 953 928 187.1
B 4 80 23771 122.11 953 928 187.1
B 12 111 23632 121.37 953 928 187.1
C 3 233 95685 429.47 938 941 220.6
C 13 61 6728 26.23 938 941 220.6
C 14 234 2816 8.5 938 941 220.6
D 13 122 1116024 5019.5 917 891 222.2
D 5 222 419490 1884.22 917 891 222.2
D 1 52 291424 1307.76 917 891 222.2

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