ASTROSAT CZTI

Data Quality Report

Orbit 18702

Creation date: 2024-06-27T17:53:42.181170
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/AS1A05_165T07_9000002796_18702cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18702cztM0_level2_quad_clean.evt
Size (bytes)699,442,56089,550,720
Size667.0 MB 85.4 MB
Events in quadrant A3,878,020604,041
Events in quadrant B3,395,241617,024
Events in quadrant C4,404,692578,692
Events in quadrant D9,073,566466,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157562
B0140602
C0174314
D0312352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63823054.779066%
B63821171.833281%
C63812083.259677%
D6381223234.978843%

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 7642 6383 102 102 1.33% 1.60%
B 7642 6382 0 0 0.00% 0.00%
C 7641 6381 6 6 0.08% 0.09%
D 7641 6382 2229 2229 29.17% 34.93%

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 13 585184 3453.63 847 833 169.2
A 9 143 20449 115.93 847 833 169.2
A 11 29 10639 57.96 847 833 169.2
B 12 111 18517 111.13 854 834 159.1
B 11 111 16129 96.12 854 834 159.1
B 0 197 15268 90.71 854 834 159.1
C 3 233 1061979 5721.77 809 818 185.5
C 14 238 128387 687.85 809 818 185.5
C 0 207 53140 282.12 809 818 185.5
D 1 52 5954475 33619.58 729 709 177.1
D 7 238 333365 1878.43 729 709 177.1
D 2 234 24181 132.54 729 709 177.1

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