ASTROSAT CZTI

Data Quality Report

Orbit 50554

Creation date: 2025-02-01T12:47:18.840008
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/AS1T05_239T01_9000006444_50554cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50554cztM0_level2_quad_clean.evt
Size (bytes)672,232,32093,352,320
Size641.1 MB 89.0 MB
Events in quadrant A6,085,332594,608
Events in quadrant B5,464,520676,993
Events in quadrant C8,177,034463,635
Events in quadrant D4,604,590595,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228162
B0211052
C0292563
D0188602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A711785512.013489%
B71186639.314414%
C7117224031.473936%
D71172022.838275%

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 7712 7118 629 629 8.16% 8.84%
B 7713 7120 439 439 5.69% 6.17%
C 7712 7119 1526 1526 19.79% 21.44%
D 7712 7119 178 178 2.31% 2.50%

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 1367571 7700.57 717 698 177.5
A 8 247 396311 2228.77 717 698 177.5
A 12 250 235645 1323.62 717 698 177.5
B 7 0 1575612 9976.57 732 707 157.9
B 5 185 265271 1675.93 732 707 157.9
B 4 216 107497 676.48 732 707 157.9
C 15 178 2199532 12849.18 597 590 171.1
C 15 214 1809150 10568.04 597 590 171.1
C 15 218 234306 1365.68 597 590 171.1
D 11 161 356701 1776.72 719 693 200.4
D 2 249 220685 1097.91 719 693 200.4
D 15 154 178285 886.31 719 693 200.4

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