ASTROSAT CZTI

Data Quality Report

Orbit 57146

Creation date: 2026-04-21T06:32:48.113821
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_083T10_9000006566_57146cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57146cztM0_level2_quad_clean.evt
Size (bytes)585,080,64089,470,080
Size558.0 MB 85.3 MB
Events in quadrant A2,838,891649,260
Events in quadrant B5,125,891614,699
Events in quadrant C7,270,517450,566
Events in quadrant D5,927,244550,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131173
B0196252
C0259492
D0220242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6375450.705882%
B637584413.239216%
C6375195230.619608%
D63754136.478431%

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 7535 6376 6 6 0.08% 0.09%
B 7535 6376 590 590 7.83% 9.25%
C 7535 6376 1658 1658 22.00% 26.00%
D 7535 6376 394 394 5.23% 6.18%

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 39761 223.31 712 694 174.9
A 8 6 20614 113.86 712 694 174.9
A 5 113 19371 106.76 712 694 174.9
B 10 16 2224002 15962.41 653 629 139.3
B 5 185 71812 511.05 653 629 139.3
B 0 213 68008 483.74 653 629 139.3
C 15 198 4067429 25256.65 589 583 161.0
C 9 38 662915 4113.33 589 583 161.0
C 2 12 65630 403.97 589 583 161.0
D 15 142 1472628 7696.83 668 635 191.2
D 12 33 985517 5149.8 668 635 191.2
D 2 249 420464 2195.22 668 635 191.2

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