ASTROSAT CZTI

Data Quality Report

Orbit 12321

Creation date: 2024-06-27T16:25:26.499580
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_048T01_9000001820_12321cztM0_level2.evt modeM0/AS1A04_048T01_9000001820_12321cztM0_level2_quad_clean.evt
Size (bytes)553,066,56073,998,720
Size527.4 MB 70.6 MB
Events in quadrant A4,839,723436,233
Events in quadrant B4,337,541439,248
Events in quadrant C3,345,205443,384
Events in quadrant D3,744,858426,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191562
B0174241
C0149481
D0160211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71122813.951069%
B71124506.327334%
C71121201.687289%
D71121692.376265%

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 7498 7114 5 5 0.07% 0.07%
B 7498 7114 173 173 2.31% 2.43%
C 7498 7114 14 14 0.19% 0.20%
D 7498 7114 42 42 0.56% 0.59%

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 15 174 563067 3230.57 851 830 174.0
A 1 162 267032 1529.57 851 830 174.0
A 1 178 155395 888.12 851 830 174.0
B 4 239 700692 4385.39 835 816 159.6
B 0 85 135955 846.77 835 816 159.6
B 0 197 58435 361.04 835 816 159.6
C 4 254 71613 367.89 830 834 192.4
C 15 208 13469 65.67 830 834 192.4
C 0 207 11379 54.81 830 834 192.4
D 5 222 191749 942.29 832 807 202.6
D 1 52 86896 424.84 832 807 202.6
D 7 71 72121 351.93 832 807 202.6

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