ASTROSAT CZTI

Data Quality Report

Orbit 39550

Creation date: 2024-06-27T22:06:00.895977
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/AS1A12_018T01_9000005488_39550cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39550cztM0_level2_quad_clean.evt
Size (bytes)391,835,52087,802,560
Size373.7 MB 83.7 MB
Events in quadrant A4,356,926581,442
Events in quadrant B2,293,925617,339
Events in quadrant C3,919,976571,485
Events in quadrant D3,526,142521,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164393
B0107222
C0150672
D0143852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52392134.065661%
B5239160.305402%
C52392574.905516%
D52393145.993510%

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 7302 5240 256 256 3.51% 4.89%
B 7302 5240 8 8 0.11% 0.15%
C 7302 5240 331 331 4.53% 6.32%
D 7302 5240 256 256 3.51% 4.89%

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 15 222 1544783 13881.49 549 539 111.2
A 10 83 418291 3755.25 549 539 111.2
A 9 143 178874 1603.09 549 539 111.2
B 5 255 93577 879.18 554 539 105.8
B 12 111 13279 120.39 554 539 105.8
B 11 111 11975 108.07 554 539 105.8
C 9 187 1265807 10077.69 539 542 125.6
C 15 208 243480 1934.97 539 542 125.6
C 15 214 218346 1734.78 539 542 125.6
D 2 249 583217 4480.35 528 513 130.1
D 12 227 481513 3698.36 528 513 130.1
D 13 249 140856 1079.08 528 513 130.1

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