ASTROSAT CZTI

Data Quality Report

Orbit 54409

Creation date: 2025-10-19T04:34:04.006928
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_54409cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54409cztM0_level2_quad_clean.evt
Size (bytes)2,592,624,960301,708,800
Size2.4 GB 287.7 MB
Events in quadrant A11,439,8842,315,930
Events in quadrant B12,646,9072,441,834
Events in quadrant C25,166,0331,635,696
Events in quadrant D44,800,2001,033,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526943
B0558233
C0926673
D01502193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248252821.135952%
B248255332.147029%
C24826547822.065576%
D248261248650.294047%

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 26315 24826 31 31 0.12% 0.12%
B 26315 24826 165 165 0.63% 0.66%
C 26316 24826 5267 5267 20.01% 21.22%
D 26316 24826 12304 12304 46.75% 49.56%

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 7 206 633333 962.79 2657 2590 655.1
A 4 61 143912 215.72 2657 2590 655.1
A 0 8 125966 188.33 2657 2590 655.1
B 0 213 824012 1469.76 2607 2501 558.9
B 7 0 538812 959.51 2607 2501 558.9
B 10 247 359902 639.43 2607 2501 558.9
C 1 241 12242275 19451.95 2308 2284 629.2
C 13 3 826826 1310.37 2308 2284 629.2
C 4 5 598815 948.01 2308 2284 629.2
D 8 176 24325735 45300.86 1884 1798 536.9
D 15 108 7142210 13298.29 1884 1798 536.9
D 2 172 2886152 5371.82 1884 1798 536.9

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