ASTROSAT CZTI

Data Quality Report

Orbit 38276

Creation date: 2024-06-27T21:50:38.578816
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/AS1A07_145T01_9000005370_38276cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38276cztM0_level2_quad_clean.evt
Size (bytes)363,839,04089,614,080
Size347.0 MB 85.5 MB
Events in quadrant A2,704,398605,648
Events in quadrant B3,394,603591,758
Events in quadrant C2,590,756605,695
Events in quadrant D4,370,706543,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111863
B0136052
C0108222
D0168182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5236130.248281%
B52363145.996944%
C5236100.190985%
D52362053.915202%

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 7270 5237 8 8 0.11% 0.15%
B 7270 5237 213 213 2.93% 4.07%
C 7270 5237 5 5 0.07% 0.10%
D 7270 5237 190 190 2.61% 3.63%

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 367480 3112.64 587 574 117.9
A 12 189 26874 223.12 587 574 117.9
A 9 143 22188 183.36 587 574 117.9
B 5 184 1010168 9452.41 561 547 106.8
B 0 189 57639 534.51 561 547 106.8
B 4 232 57617 534.31 561 547 106.8
C 15 214 221158 1644.31 578 585 134.1
C 15 208 74835 553.51 578 585 134.1
C 0 10 25459 185.43 578 585 134.1
D 10 203 1096413 7958.01 567 551 137.7
D 12 235 318831 2311.31 567 551 137.7
D 2 250 207394 1502.07 567 551 137.7

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