ASTROSAT CZTI

Data Quality Report

Orbit 58558

Creation date: 2026-07-25T06:16:33.376241
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_044T04_9000006592_58558cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58558cztM0_level2_quad_clean.evt
Size (bytes)410,656,32095,751,360
Size391.6 MB 91.3 MB
Events in quadrant A3,036,187631,337
Events in quadrant B3,964,833672,017
Events in quadrant C2,973,404604,965
Events in quadrant D4,722,363538,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137732
B0162932
C0136692
D0186442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6482380.586239%
B64821642.530083%
C6482310.478247%
D64823946.078371%

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 7567 6483 16 16 0.21% 0.25%
B 7567 6483 80 80 1.06% 1.23%
C 7567 6483 20 20 0.26% 0.31%
D 7567 6483 310 310 4.10% 4.78%

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 17 114078 639.27 712 692 177.4
A 13 248 84408 471.99 712 692 177.4
A 4 3 29583 162.89 712 692 177.4
B 0 171 631015 4226.92 704 680 149.1
B 10 247 201145 1344.29 704 680 149.1
B 7 0 144364 963.52 704 680 149.1
C 4 5 69611 358.17 694 687 192.4
C 12 249 51914 266.21 694 687 192.4
C 6 223 50645 259.61 694 687 192.4
D 3 12 725037 3801.25 665 634 190.6
D 2 249 381842 2000.36 665 634 190.6
D 9 102 210422 1100.85 665 634 190.6

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