ASTROSAT CZTI

Data Quality Report

Orbit 52908

Creation date: 2025-07-16T20:36:00.590369
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/AS1C09_011T06_9000006484_52908cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52908cztM0_level2_quad_clean.evt
Size (bytes)1,033,623,36077,653,440
Size985.7 MB 74.1 MB
Events in quadrant A17,891,65023,893
Events in quadrant B3,421,187733,943
Events in quadrant C7,014,531588,725
Events in quadrant D9,375,285501,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580437
B0153670
C0259370
D0328950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7218702697.339983%
B7218350.484899%
C721887112.067055%
D7218184225.519534%

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 7218 7218 6589 6589 91.29% 91.29%
B 7218 7218 11 11 0.15% 0.15%
C 7218 7218 669 669 9.27% 9.27%
D 7218 7218 1688 1688 23.39% 23.39%

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 9 191 15220880 237601.52 242 235 64.1
A 12 17 1038874 16213.65 242 235 64.1
A 0 8 146582 2284.55 242 235 64.1
B 4 158 63430 389.87 758 733 160.8
B 10 247 48844 299.17 758 733 160.8
B 1 255 42970 262.65 758 733 160.8
C 7 80 2369000 12109.78 717 711 195.6
C 2 12 584744 2986.34 717 711 195.6
C 15 224 334663 1707.6 717 711 195.6
D 8 176 4388248 22410.03 674 643 195.8
D 15 125 571600 2916.21 674 643 195.8
D 15 174 405332 2066.98 674 643 195.8

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