ASTROSAT CZTI

Data Quality Report

Orbit 54477

Creation date: 2025-10-23T17:18:24.723044
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/AS1A14_126T19_9000006518_54477cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54477cztM0_level2_quad_clean.evt
Size (bytes)907,441,92084,274,560
Size865.4 MB 80.4 MB
Events in quadrant A3,440,970691,560
Events in quadrant B3,826,702736,723
Events in quadrant C6,612,259579,905
Events in quadrant D19,128,35821,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156190
B0169090
C0248941
D0618740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A749590.120080%
B74961201.600854%
C7495107114.289526%
D7495731497.585057%

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 7495 7495 8 8 0.11% 0.11%
B 7496 7496 101 101 1.35% 1.35%
C 7495 7495 912 912 12.17% 12.17%
D 7494 7494 7302 7302 97.44% 97.44%

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 4 249 125690 653.39 778 757 191.2
A 3 14 104808 544.18 778 757 191.2
A 11 3 92594 480.3 778 757 191.2
B 5 185 495535 2981.56 766 738 166.0
B 0 213 204435 1227.44 766 738 166.0
B 1 207 29039 170.54 766 738 166.0
C 12 2 2682221 14047.76 696 692 190.9
C 13 3 546432 2858.98 696 692 190.9
C 4 5 221203 1155.19 696 692 190.9
D 10 181 10599984 89964.53 410 390 117.8
D 8 176 5952804 50521.38 410 390 117.8
D 10 199 352312 2986.95 410 390 117.8

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