ASTROSAT CZTI

Data Quality Report

Orbit 54938

Creation date: 2025-11-23T17:20:17.842267
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_014T01_9000006528_54938cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54938cztM0_level2_quad_clean.evt
Size (bytes)482,731,20096,894,720
Size460.4 MB 92.4 MB
Events in quadrant A3,686,348639,991
Events in quadrant B2,944,126700,444
Events in quadrant C6,160,967568,154
Events in quadrant D4,565,788565,895

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152672
B0136465
C02296710
D0181682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65891822.762179%
B6587851.290421%
C658780112.160316%
D65892433.687965%

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 7679 6589 103 103 1.34% 1.56%
B 7679 6588 4 4 0.05% 0.06%
C 7679 6589 664 664 8.65% 10.08%
D 7679 6590 179 179 2.33% 2.72%

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 3 45 491747 2744.49 723 705 178.9
A 3 14 324273 1808.45 723 705 178.9
A 5 241 25704 139.72 723 705 178.9
B 0 182 70786 452.1 715 688 155.0
B 7 252 25842 162.23 715 688 155.0
B 12 111 18525 115.04 715 688 155.0
C 4 5 2492980 13345.61 677 670 186.8
C 12 252 525021 2807.75 677 670 186.8
C 6 223 197100 1051.83 677 670 186.8
D 6 46 445182 2253.56 695 665 197.3
D 2 172 299596 1515.49 695 665 197.3
D 11 129 220343 1113.7 695 665 197.3

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