ASTROSAT CZTI

Data Quality Report

Orbit 15768

Creation date: 2024-06-27T17:13:38.598897
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/AS1G08_028T01_9000002334_15768cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15768cztM0_level2_quad_clean.evt
Size (bytes)529,174,08089,847,360
Size504.7 MB 85.7 MB
Events in quadrant A3,788,801546,194
Events in quadrant B3,915,798564,135
Events in quadrant C3,851,439535,317
Events in quadrant D3,931,760524,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165214
B0166433
C0165123
D0171353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79173514.433498%
B79173744.724012%
C79173774.761905%
D79173194.029304%

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 8373 7921 0 0 0.00% 0.00%
B 8373 7921 1 1 0.01% 0.01%
C 8373 7921 1 1 0.01% 0.01%
D 8373 7921 11 11 0.13% 0.14%

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 15 239 16776 78.98 980 955 200.3
A 0 226 8673 38.53 980 955 200.3
A 12 194 7238 31.36 980 955 200.3
B 12 111 23190 116.58 980 952 190.7
B 3 209 20095 100.36 980 952 190.7
B 11 111 20077 100.26 980 952 190.7
C 14 238 142899 641.51 941 942 221.3
C 3 233 21995 95.14 941 942 221.3
C 10 187 13412 56.35 941 942 221.3
D 1 52 229948 898.16 949 926 255.0
D 2 234 30632 116.5 949 926 255.0
D 10 70 30174 114.7 949 926 255.0

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