ASTROSAT CZTI

Data Quality Report

Orbit 50745

Creation date: 2025-02-14T09:38:55.663669
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/AS1C07_001T01_9000006450_50745cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50745cztM0_level2_quad_clean.evt
Size (bytes)677,612,16099,313,920
Size646.2 MB 94.7 MB
Events in quadrant A5,914,864649,770
Events in quadrant B3,850,131727,313
Events in quadrant C6,870,896583,603
Events in quadrant D7,884,918540,005

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01482
B01480
C01482
D01482

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023116365
B017188428
C025807377
D029211757

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72733044.179843%
B7273761.044961%
C727384411.604565%
D724791012.556920%

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 7356 7316 274 274 3.72% 3.75%
B 7390 7305 62 62 0.84% 0.85%
C 7353 7301 833 833 11.33% 11.41%
D 7350 7274 979 979 13.32% 13.46%

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 4 4 889291 4844.05 741 723 183.4
A 9 191 809563 4409.41 741 723 183.4
A 3 161 419505 2283.0 741 723 183.4
B 10 247 388249 2420.29 752 726 160.1
B 8 128 77249 477.93 752 726 160.1
B 7 0 73086 451.93 752 726 160.1
C 15 254 1179901 5970.66 707 701 197.5
C 13 3 502624 2541.39 707 701 197.5
C 9 38 415358 2099.54 707 701 197.5
D 1 47 1497904 7800.08 689 664 192.0
D 2 216 586358 3051.25 689 664 192.0
D 8 176 549725 2860.41 689 664 192.0

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