ASTROSAT CZTI

Data Quality Report

Orbit 40722

Creation date: 2024-06-27T22:19:36.377260
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/AS1A12_042T01_9000005560_40722cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40722cztM0_level2_quad_clean.evt
Size (bytes)367,513,92087,171,840
Size350.5 MB 83.1 MB
Events in quadrant A2,741,293604,270
Events in quadrant B2,515,515631,030
Events in quadrant C5,411,733533,991
Events in quadrant D2,534,922509,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112703
B0108582
C0195562
D0112932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514490.174961%
B5144170.330482%
C514470413.685848%
D51453436.666667%

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 7297 5145 5 5 0.07% 0.10%
B 7297 5145 8 8 0.11% 0.16%
C 7297 5145 691 691 9.47% 13.43%
D 7298 5145 27 27 0.37% 0.52%

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 10 83 488637 4226.05 567 556 115.5
A 12 189 28082 238.33 567 556 115.5
A 9 143 22175 187.19 567 556 115.5
B 0 190 86809 789.8 570 553 109.2
B 4 171 50383 456.27 570 553 109.2
B 5 255 45754 413.88 570 553 109.2
C 9 187 3066558 25170.41 523 525 121.8
C 15 214 213209 1746.01 523 525 121.8
C 14 254 69979 570.17 523 525 121.8
D 2 250 155527 1228.66 522 507 126.2
D 12 191 137948 1089.33 522 507 126.2
D 2 249 84683 667.16 522 507 126.2

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