ASTROSAT CZTI

Data Quality Report

Orbit 13297

Creation date: 2024-06-27T16:38:57.019637
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_023T01_9000001978_13297cztM0_level2.evt modeM0/AS1G08_023T01_9000001978_13297cztM0_level2_quad_clean.evt
Size (bytes)632,021,760105,387,840
Size602.7 MB 100.5 MB
Events in quadrant A5,070,199658,199
Events in quadrant B4,323,402669,349
Events in quadrant C4,525,365655,126
Events in quadrant D4,657,623630,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204433
B0182632
C0192292
D0195552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83235266.319837%
B83231802.162682%
C83231682.018503%
D83231932.318875%

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 10264 8326 293 293 2.85% 3.52%
B 10264 8326 35 35 0.34% 0.42%
C 10264 8326 50 50 0.49% 0.60%
D 10264 8326 81 81 0.79% 0.97%

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 883235 4424.38 986 965 199.4
A 8 15 359056 1795.74 986 965 199.4
A 1 162 20817 99.55 986 965 199.4
B 0 189 112002 573.45 1018 993 193.6
B 3 64 97188 496.93 1018 993 193.6
B 4 142 76267 388.85 1018 993 193.6
C 6 96 629349 2762.72 987 992 227.4
C 15 208 38280 163.95 987 992 227.4
C 14 234 8340 32.31 987 992 227.4
D 1 52 290409 1227.53 981 952 235.8
D 5 222 246490 1041.28 981 952 235.8
D 12 222 159508 672.41 981 952 235.8

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