ASTROSAT CZTI

Data Quality Report

Orbit 08139

Creation date: 2024-06-27T15:28:33.780114
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/AS1A03_051T01_9000001120_08139cztM0_level2.evt modeM0/AS1A03_051T01_9000001120_08139cztM0_level2_quad_clean.evt
Size (bytes)506,174,400111,303,360
Size482.7 MB 106.1 MB
Events in quadrant A3,637,005711,651
Events in quadrant B3,815,623724,078
Events in quadrant C3,634,319706,450
Events in quadrant D3,701,350675,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164604
B0167593
C0164823
D0168113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7954690.867488%
B79541602.011567%
C7954951.194368%
D7954620.779482%

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 8394 7957 0 0 0.00% 0.00%
B 8394 7957 2 2 0.02% 0.03%
C 8394 7957 0 0 0.00% 0.00%
D 8394 7957 2 2 0.02% 0.03%

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 0 226 8762 40.6 941 920 193.1
A 12 194 8500 39.25 941 920 193.1
A 8 15 8253 37.97 941 920 193.1
B 0 219 47618 252.35 953 927 185.0
B 0 214 38993 205.73 953 927 185.0
B 12 111 20590 106.27 953 927 185.0
C 1 16 13839 59.98 926 932 215.2
C 13 61 6945 27.94 926 932 215.2
C 14 67 4388 16.06 926 932 215.2
D 1 52 178506 731.02 909 888 243.0
D 2 234 25518 101.37 909 888 243.0
D 12 233 18154 71.06 909 888 243.0

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