ASTROSAT CZTI

Data Quality Report

Orbit 23154

Creation date: 2024-06-27T18:50:37.106803
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/AS1A08_009T01_9000003422_23154cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23154cztM0_level2_quad_clean.evt
Size (bytes)810,449,280126,169,920
Size772.9 MB 120.3 MB
Events in quadrant A4,343,180826,998
Events in quadrant B4,321,482842,134
Events in quadrant C4,415,909811,238
Events in quadrant D10,854,714715,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187122
B0184912
C0186352
D0384152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90051621.799001%
B90061051.165889%
C90061571.743282%
D9006213823.739729%

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 10605 9005 39 39 0.37% 0.43%
B 10606 9007 2 2 0.02% 0.02%
C 10606 9006 0 0 0.00% 0.00%
D 10606 9007 1804 1804 17.01% 20.03%

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 15 174 138520 624.35 1088 1062 220.2
A 13 254 12324 51.15 1088 1062 220.2
A 6 16 11703 48.33 1088 1062 220.2
B 12 111 25532 117.37 1087 1056 208.5
B 0 245 23137 105.89 1087 1056 208.5
B 11 111 22971 105.09 1087 1056 208.5
C 14 238 166271 675.32 1047 1051 244.7
C 0 10 110893 448.97 1047 1051 244.7
C 7 247 48142 192.48 1047 1051 244.7
D 1 52 6683061 28506.2 961 932 234.4
D 7 238 276261 1174.56 961 932 234.4
D 1 239 52299 219.13 961 932 234.4

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