ASTROSAT CZTI

Data Quality Report

Orbit 54559

Creation date: 2025-10-29T04:52:14.592532
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_127T09_9000006520_54559cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54559cztM0_level2_quad_clean.evt
Size (bytes)479,134,08098,553,600
Size456.9 MB 94.0 MB
Events in quadrant A4,744,325639,162
Events in quadrant B4,351,702673,991
Events in quadrant C4,023,604619,761
Events in quadrant D4,099,444588,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184632
B0175482
C0167722
D0171523

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66435618.444980%
B66445528.308248%
C66443705.568934%
D66433194.802047%

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 8878 6645 343 343 3.86% 5.16%
B 8879 6646 287 287 3.23% 4.32%
C 8879 6646 213 213 2.40% 3.20%
D 8878 6645 190 190 2.14% 2.86%

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 14 1137604 6139.53 749 730 185.2
A 11 3 351722 1895.48 749 730 185.2
A 14 235 230355 1240.06 749 730 185.2
B 8 234 827540 5380.98 725 700 153.7
B 0 213 200336 1299.21 725 700 153.7
B 10 14 168366 1091.15 725 700 153.7
C 12 254 506245 2493.45 739 733 202.7
C 12 249 138489 679.48 739 733 202.7
C 13 3 131709 646.04 739 733 202.7
D 15 94 610041 2886.92 741 708 211.1
D 2 172 240974 1138.34 741 708 211.1
D 1 3 87703 412.17 741 708 211.1

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