ASTROSAT CZTI

Data Quality Report

Orbit 56336

Creation date: 2026-02-25T19:04:53.472350
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_049T01_9000006552_56336cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56336cztM0_level2_quad_clean.evt
Size (bytes)949,564,80089,928,000
Size905.6 MB 85.8 MB
Events in quadrant A5,797,729691,052
Events in quadrant B4,588,634757,353
Events in quadrant C5,040,149685,823
Events in quadrant D19,124,44951,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225280
B0190460
C0205340
D0621640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77156708.684381%
B77154826.247570%
C77154405.703176%
D7716723593.766200%

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 7715 7715 464 464 6.01% 6.01%
B 7715 7715 124 124 1.61% 1.61%
C 7715 7715 285 285 3.69% 3.69%
D 7715 7715 6650 6650 86.20% 86.20%

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 95 1210855 5745.09 855 834 210.6
A 0 8 371157 1758.27 855 834 210.6
A 0 143 283372 1341.47 855 834 210.6
B 5 185 604317 3327.77 847 814 181.4
B 5 172 126775 694.56 847 814 181.4
B 0 231 103920 568.54 847 814 181.4
C 12 254 561449 2501.53 821 816 224.1
C 5 250 479158 2134.35 821 816 224.1
C 12 252 282145 1255.28 821 816 224.1
D 8 129 17150528 197699.09 300 287 86.7
D 2 62 243947 2808.79 300 287 86.7
D 12 3 109268 1256.28 300 287 86.7

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