ASTROSAT CZTI

Data Quality Report

Orbit 54002

Creation date: 2025-09-22T20:36:31.756986
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_041T01_9000006510_54002cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54002cztM0_level2_quad_clean.evt
Size (bytes)1,349,994,240191,975,040
Size1.3 GB 183.1 MB
Events in quadrant A8,723,2831,311,948
Events in quadrant B12,384,9371,280,507
Events in quadrant C11,598,5931,238,803
Events in quadrant D16,124,410961,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365824
B0469974
C0448544
D0584614

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147667134.828660%
B14767218614.803278%
C147679056.128530%
D14767299920.308797%

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 15331 14767 436 436 2.84% 2.95%
B 15332 14767 1612 1612 10.51% 10.92%
C 15332 14769 702 702 4.58% 4.75%
D 15331 14769 2950 2950 19.24% 19.97%

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 1852480 4911.89 1550 1510 376.8
A 4 249 203998 537.34 1550 1510 376.8
A 0 8 194533 512.22 1550 1510 376.8
B 5 250 2625252 8187.51 1497 1444 320.5
B 4 81 2311771 7209.3 1497 1444 320.5
B 5 185 584769 1820.25 1497 1444 320.5
C 10 171 2825603 6914.26 1498 1485 408.4
C 1 241 1082387 2646.36 1498 1485 408.4
C 12 252 353481 861.79 1498 1485 408.4
D 8 176 7633264 19849.57 1365 1303 384.5
D 2 172 852678 2214.3 1365 1303 384.5
D 3 12 716604 1860.39 1365 1303 384.5

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