ASTROSAT CZTI

Data Quality Report

Orbit 54376

Creation date: 2025-10-17T11:40:58.717356
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_54376cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54376cztM0_level2_quad_clean.evt
Size (bytes)708,906,24095,106,240
Size676.1 MB 90.7 MB
Events in quadrant A3,303,426686,028
Events in quadrant B5,907,625671,721
Events in quadrant C9,090,653482,061
Events in quadrant D7,370,289528,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150460
B0224080
C03219617
D0268670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A734550.068074%
B73467059.597060%
C7344210128.608388%
D7346109514.906071%

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 7345 7345 1 1 0.01% 0.01%
B 7346 7346 529 529 7.20% 7.20%
C 7346 7345 1946 1946 26.49% 26.49%
D 7346 7346 1073 1073 14.61% 14.61%

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 94498 490.07 782 764 191.3
A 4 78 46658 239.95 782 764 191.3
A 5 243 24283 122.96 782 764 191.3
B 10 14 2162074 13476.3 742 714 160.4
B 7 0 399450 2486.16 742 714 160.4
B 12 18 136004 843.55 742 714 160.4
C 1 241 4398313 24203.11 673 668 181.7
C 12 2 939886 5169.13 673 668 181.7
C 1 29 603508 3317.82 673 668 181.7
D 8 176 3667843 18140.39 714 682 202.2
D 12 3 261585 1290.61 714 682 202.2
D 15 217 256031 1263.14 714 682 202.2

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