ASTROSAT CZTI

Data Quality Report

Orbit 53526

Creation date: 2025-08-21T09:43:57.773005
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_004T04_9000006500_53526cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53526cztM0_level2_quad_clean.evt
Size (bytes)420,851,52045,642,240
Size401.4 MB 43.5 MB
Events in quadrant A2,326,350354,697
Events in quadrant B1,650,906381,596
Events in quadrant C8,712,14475,950
Events in quadrant D2,605,075312,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093930
B074770
C0283980
D0102540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3637621.704702%
B363750.137476%
C3638298482.023090%
D36381453.985706%

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 3637 3637 52 52 1.43% 1.43%
B 3637 3637 2 2 0.05% 0.05%
C 3638 3638 2909 2909 79.96% 79.96%
D 3638 3638 129 129 3.55% 3.55%

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 15 174 456687 4671.27 389 380 97.7
A 3 63 168908 1725.24 389 380 97.7
A 3 62 117260 1196.52 389 380 97.7
B 5 185 29453 349.33 384 371 83.2
B 10 28 21542 254.31 384 371 83.2
B 10 247 18384 216.37 384 371 83.2
C 9 38 3161096 51157.34 221 220 61.8
C 7 64 3036988 49148.71 221 220 61.8
C 1 241 928214 15019.16 221 220 61.8
D 12 2 369728 3480.9 371 355 106.1
D 3 12 334665 3150.47 371 355 106.1
D 6 239 101481 952.99 371 355 106.1

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