ASTROSAT CZTI

Data Quality Report

Orbit 11754

Creation date: 2024-06-27T16:17:44.479674
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/AS1A04_113T03_9000001738_11754cztM0_level2.evt modeM0/AS1A04_113T03_9000001738_11754cztM0_level2_quad_clean.evt
Size (bytes)642,516,48069,353,280
Size612.8 MB 66.1 MB
Events in quadrant A3,924,566421,810
Events in quadrant B4,533,752414,367
Events in quadrant C3,198,745432,032
Events in quadrant D7,369,137384,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158443
B0174032
C0134732
D0261892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63972063.220259%
B63973946.159137%
C63971211.891512%
D639774111.583555%

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 7593 6399 2 2 0.03% 0.03%
B 7593 6399 156 156 2.05% 2.44%
C 7593 6399 2 2 0.03% 0.03%
D 7593 6399 648 648 8.53% 10.13%

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 8 15 200409 1194.02 826 809 167.2
A 1 162 185699 1106.03 826 809 167.2
A 1 178 111823 664.09 826 809 167.2
B 4 239 824132 5321.89 820 801 154.7
B 3 64 195634 1259.37 820 801 154.7
B 15 204 142817 917.97 820 801 154.7
C 14 234 12292 61.7 816 822 185.9
C 13 61 6094 28.36 816 822 185.9
C 12 4 3007 11.75 816 822 185.9
D 12 221 3117567 16655.77 789 767 187.1
D 8 195 418482 2232.21 789 767 187.1
D 1 52 323601 1725.18 789 767 187.1

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