ASTROSAT CZTI

Data Quality Report

Orbit 39823

Creation date: 2024-06-27T22:09:19.419984
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_022T01_9000005498_39823cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39823cztM0_level2_quad_clean.evt
Size (bytes)617,883,84074,056,320
Size589.3 MB 70.6 MB
Events in quadrant A3,290,073628,128
Events in quadrant B2,690,944645,568
Events in quadrant C11,039,843163,967
Events in quadrant D5,461,539453,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127602
B0111141
C0362381
D0194681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50131402.792739%
B5013410.817874%
C5013386277.039697%
D5013107021.344504%

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 7075 5014 121 121 1.71% 2.41%
B 7075 5014 24 24 0.34% 0.48%
C 7075 5014 3432 3432 48.51% 68.45%
D 7075 5014 975 975 13.78% 19.45%

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 10 83 446803 3758.62 591 581 118.7
A 14 235 294660 2477.09 591 581 118.7
A 9 143 201813 1695.02 591 581 118.7
B 4 171 251363 2260.02 582 568 111.0
B 5 32 52966 472.18 582 568 111.0
B 5 172 43189 384.07 582 568 111.0
C 9 187 8957858 116577.52 327 329 76.8
C 15 208 634697 8255.96 327 329 76.8
C 15 214 130034 1688.04 327 329 76.8
D 12 227 2692445 22248.63 496 481 121.0
D 13 249 344042 2839.47 496 481 121.0
D 12 233 264808 2184.62 496 481 121.0

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