ASTROSAT CZTI

Data Quality Report

Orbit 51312

Creation date: 2025-03-24T14:13:54.047981
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/AS1C07_001T03_9000006456_51312cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51312cztM0_level2_quad_clean.evt
Size (bytes)886,988,16092,681,280
Size845.9 MB 88.4 MB
Events in quadrant A6,897,557655,352
Events in quadrant B4,228,128743,876
Events in quadrant C14,487,709290,449
Events in quadrant D6,633,599588,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258800
B0178240
C0481860
D0250130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75823955.209707%
B75831682.215482%
C7583460560.727944%
D75836158.110247%

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 7582 7582 281 281 3.71% 3.71%
B 7583 7583 113 113 1.49% 1.49%
C 7583 7583 4113 4113 54.24% 54.24%
D 7583 7583 600 600 7.91% 7.91%

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 12 3 1893868 10162.7 752 735 186.3
A 12 250 1124114 6030.52 752 735 186.3
A 12 194 219168 1172.59 752 735 186.3
B 5 172 389796 2357.01 764 736 165.1
B 7 252 145853 879.15 764 736 165.1
B 5 185 129454 779.8 764 736 165.1
C 4 12 7345825 54266.04 488 485 135.4
C 13 49 2247653 16601.67 488 485 135.4
C 15 179 1503108 11101.11 488 485 135.4
D 7 60 1105052 5497.07 718 692 200.9
D 6 42 553513 2751.73 718 692 200.9
D 7 80 438133 2177.41 718 692 200.9

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