ASTROSAT CZTI

Data Quality Report

Orbit 51405

Creation date: 2025-03-30T21:06:24.275590
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_51405cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51405cztM0_level2_quad_clean.evt
Size (bytes)682,159,68088,986,240
Size650.6 MB 84.9 MB
Events in quadrant A8,630,246506,799
Events in quadrant B5,316,036642,181
Events in quadrant C6,062,532561,424
Events in quadrant D4,743,145533,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302231
B0202541
C0226331
D0185551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465139721.608662%
B64653765.815932%
C64654597.099768%
D64653435.305491%

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 7435 6466 1167 1167 15.70% 18.05%
B 7435 6466 194 194 2.61% 3.00%
C 7435 6466 333 333 4.48% 5.15%
D 7435 6466 287 287 3.86% 4.44%

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 8 249 1618887 10079.97 643 628 160.5
A 12 3 1470641 9156.56 643 628 160.5
A 12 250 1017504 6334.02 643 628 160.5
B 10 254 1836969 12756.74 673 649 143.9
B 5 185 309763 2147.39 673 649 143.9
B 6 51 119769 827.52 673 649 143.9
C 12 247 943239 5274.5 659 655 178.7
C 15 179 848915 4746.69 659 655 178.7
C 12 252 496381 2773.98 659 655 178.7
D 15 94 812566 4447.45 654 632 182.6
D 2 216 301392 1647.44 654 632 182.6
D 11 176 162484 886.56 654 632 182.6

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