ASTROSAT CZTI

Data Quality Report

Orbit 50654

Creation date: 2025-02-08T06:13:23.635943
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_241T01_9000006446_50654cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50654cztM0_level2_quad_clean.evt
Size (bytes)547,344,00097,585,920
Size522.0 MB 93.1 MB
Events in quadrant A4,654,913636,687
Events in quadrant B4,444,552694,263
Events in quadrant C5,972,900592,389
Events in quadrant D4,673,704568,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184092
B0179432
C0223702
D0188112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66441802.709211%
B66442183.281156%
C66446049.090909%
D66443895.854907%

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 7819 6645 109 109 1.39% 1.64%
B 7819 6645 101 101 1.29% 1.52%
C 7819 6645 434 434 5.55% 6.53%
D 7819 6645 324 324 4.14% 4.88%

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 4 989486 5684.2 703 685 174.0
A 3 130 235102 1347.56 703 685 174.0
A 4 3 178992 1025.01 703 685 174.0
B 3 249 329597 2201.0 705 681 149.4
B 4 206 214477 1430.66 705 681 149.4
B 8 128 153504 1022.64 705 681 149.4
C 4 5 1019187 5362.75 679 671 189.9
C 15 1 645800 3396.77 679 671 189.9
C 13 3 459199 2414.27 679 671 189.9
D 13 84 821462 4341.16 676 650 189.1
D 7 110 178131 938.67 676 650 189.1
D 2 249 127730 672.11 676 650 189.1

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