ASTROSAT CZTI

Data Quality Report

Orbit 27068

Creation date: 2024-06-27T19:36:06.719390
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_120T02_9000003904_27068cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27068cztM0_level2_quad_clean.evt
Size (bytes)634,674,240109,535,040
Size605.3 MB 104.5 MB
Events in quadrant A3,956,193738,343
Events in quadrant B5,659,195707,352
Events in quadrant C3,524,179742,977
Events in quadrant D5,662,723696,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158870
B0208550
C0144760
D0210120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193901.453254%
B6194107617.371650%
C61931081.743904%
D61935939.575327%

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 7533 6194 29 29 0.38% 0.47%
B 7534 6195 881 881 11.69% 14.22%
C 7533 6194 0 0 0.00% 0.00%
D 7533 6194 593 593 7.87% 9.57%

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 14 235 518399 2978.39 873 862 173.8
A 12 189 45755 258.36 873 862 173.8
A 6 16 26040 144.9 873 862 173.8
B 0 189 2439386 16049.22 811 793 151.9
B 10 245 29997 192.2 811 793 151.9
B 0 182 21590 136.87 811 793 151.9
C 14 238 140944 694.62 866 877 201.6
C 15 208 6775 29.25 866 877 201.6
C 13 61 5709 23.96 866 877 201.6
D 1 52 2268358 11360.11 836 815 199.6
D 2 250 206976 1032.84 836 815 199.6
D 2 234 27013 131.25 836 815 199.6

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