ASTROSAT CZTI

Data Quality Report

Orbit 54485

Creation date: 2025-10-24T05:07:34.512580
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_126T19_9000006518_54485cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54485cztM0_level2_quad_clean.evt
Size (bytes)540,587,52089,366,400
Size515.5 MB 85.2 MB
Events in quadrant A3,140,475621,429
Events in quadrant B3,645,151658,249
Events in quadrant C3,618,599586,456
Events in quadrant D9,106,205390,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141122
B0154982
C0156002
D0314724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437911.413702%
B64371912.967221%
C64372403.728445%
D6436220134.198260%

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 7516 6436 47 47 0.63% 0.73%
B 7516 6436 106 106 1.41% 1.65%
C 7516 6436 188 188 2.50% 2.92%
D 7515 6435 2254 2254 29.99% 35.03%

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 4 249 272921 1588.96 693 674 171.3
A 7 237 61870 357.17 693 674 171.3
A 3 14 32652 186.64 693 674 171.3
B 0 213 217147 1468.19 685 658 147.5
B 2 249 209756 1418.07 685 658 147.5
B 5 172 189433 1280.24 685 658 147.5
C 4 5 412610 2223.13 676 670 185.3
C 14 96 158234 850.33 676 670 185.3
C 12 252 143425 770.41 676 670 185.3
D 2 172 5701853 34486.76 577 549 165.3
D 8 176 783549 4736.31 577 549 165.3
D 3 12 66523 399.07 577 549 165.3

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