ASTROSAT CZTI

Data Quality Report

Orbit 14586

Creation date: 2024-06-27T16:57:11.373813
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_055T02_9000002148_14586cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14586cztM0_level2_quad_clean.evt
Size (bytes)656,622,72085,809,600
Size626.2 MB 81.8 MB
Events in quadrant A7,520,361521,413
Events in quadrant B4,056,013539,431
Events in quadrant C4,407,653533,451
Events in quadrant D3,447,548534,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273183
B0164252
C0182332
D0147062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67282483.686088%
B67282023.002378%
C6728971.441736%
D6728811.203924%

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 8879 6729 6 6 0.07% 0.09%
B 8879 6729 85 85 0.96% 1.26%
C 8879 6729 0 0 0.00% 0.00%
D 8879 6729 10 10 0.11% 0.15%

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 0 23 3852690 22124.39 863 846 174.1
A 0 226 236309 1352.46 863 846 174.1
A 8 15 57753 326.86 863 846 174.1
B 10 16 547600 3354.16 860 842 163.0
B 0 189 47715 287.55 860 842 163.0
B 0 229 31209 186.29 860 842 163.0
C 3 233 1096697 5617.06 847 853 195.1
C 3 232 5827 25.5 847 853 195.1
C 13 61 5786 25.29 847 853 195.1
D 12 110 96899 472.8 850 829 203.2
D 10 199 50269 243.32 850 829 203.2
D 2 152 28525 136.3 850 829 203.2

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