ASTROSAT CZTI

Data Quality Report

Orbit 50594

Creation date: 2025-02-04T06:05:55.878540
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_50594cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50594cztM0_level2_quad_clean.evt
Size (bytes)608,172,48093,539,520
Size580.0 MB 89.2 MB
Events in quadrant A4,026,644616,006
Events in quadrant B7,115,906606,329
Events in quadrant C4,690,941602,938
Events in quadrant D6,169,555548,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166642
B0257312
C0185452
D0230022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65763665.565693%
B6576109016.575426%
C65753425.201521%
D65755698.653992%

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 7821 6577 309 309 3.95% 4.70%
B 7821 6577 861 861 11.01% 13.09%
C 7820 6576 260 260 3.32% 3.95%
D 7820 6576 494 494 6.32% 7.51%

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 10 251 612369 3621.22 678 664 168.9
A 5 240 185004 1091.27 678 664 168.9
A 4 3 111596 656.7 678 664 168.9
B 5 172 1814418 13244.47 650 631 136.9
B 4 170 1218123 8890.26 650 631 136.9
B 10 251 264732 1928.49 650 631 136.9
C 15 232 665277 3430.6 684 677 193.7
C 10 69 224790 1156.85 684 677 193.7
C 4 5 178829 919.6 684 677 193.7
D 8 246 2379868 12713.7 665 640 187.1
D 7 96 261432 1393.57 665 640 187.1
D 7 126 235169 1253.24 665 640 187.1

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