ASTROSAT CZTI

Data Quality Report

Orbit 25346

Creation date: 2024-06-27T19:16:36.825380
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/AS1A09_059T01_9000003706_25346cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25346cztM0_level2_quad_clean.evt
Size (bytes)519,048,000123,160,320
Size495.0 MB 117.5 MB
Events in quadrant A3,555,379853,199
Events in quadrant B3,788,595841,910
Events in quadrant C3,798,502798,181
Events in quadrant D4,144,983792,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145550
B0151850
C0151580
D0168250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63691071.680013%
B63692614.097975%
C63692153.375726%
D63691261.978333%

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 7699 6369 0 0 0.00% 0.00%
B 7699 6370 104 104 1.35% 1.63%
C 7699 6369 51 51 0.66% 0.80%
D 7699 6369 38 38 0.49% 0.60%

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 15 173 67775 375.4 905 890 178.2
A 13 254 9841 50.24 905 890 178.2
A 0 226 7990 39.85 905 890 178.2
B 3 112 360985 2255.32 872 855 159.7
B 12 111 18619 111.25 872 855 159.7
B 11 111 16757 99.59 872 855 159.7
C 9 54 330539 1697.91 847 856 194.2
C 14 238 139804 715.6 847 856 194.2
C 3 233 14865 72.15 847 856 194.2
D 8 195 315877 1511.86 875 855 208.4
D 12 235 179052 855.2 875 855 208.4
D 12 233 172715 824.79 875 855 208.4

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