ASTROSAT CZTI

Data Quality Report

Orbit 54879

Creation date: 2025-11-19T18:10:09.815055
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_039T06_9000006526_54879cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54879cztM0_level2_quad_clean.evt
Size (bytes)496,684,80089,121,600
Size473.7 MB 85.0 MB
Events in quadrant A3,640,866610,237
Events in quadrant B4,885,706563,937
Events in quadrant C4,324,957568,247
Events in quadrant D5,052,693523,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149502
B0189212
C0170331
D0192071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61971181.904147%
B619796815.620462%
C61982844.582123%
D61984347.002259%

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 7293 6198 24 24 0.33% 0.39%
B 7292 6197 754 754 10.34% 12.17%
C 7293 6198 236 236 3.24% 3.81%
D 7293 6198 365 365 5.00% 5.89%

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 857484 5031.88 688 670 170.3
A 0 8 82239 479.04 688 670 170.3
A 13 254 13417 74.86 688 670 170.3
B 5 185 2255707 16498.59 634 611 136.7
B 10 247 41360 298.13 634 611 136.7
B 10 245 28249 202.2 634 611 136.7
C 4 5 1307718 7186.25 659 654 181.9
C 12 252 188025 1030.17 659 654 181.9
C 14 254 141370 773.66 659 654 181.9
D 11 176 1127581 6020.05 655 625 187.2
D 6 239 320370 1708.03 655 625 187.2
D 10 181 185932 989.88 655 625 187.2

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