ASTROSAT CZTI

Data Quality Report

Orbit 31622

Creation date: 2024-06-27T20:30:47.016992
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/AS1A10_123T01_9000004620_31622cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31622cztM0_level2_quad_clean.evt
Size (bytes)2,179,224,000224,861,760
Size2.0 GB 214.4 MB
Events in quadrant A22,758,6121,165,756
Events in quadrant B15,996,2201,509,563
Events in quadrant C11,799,1551,464,155
Events in quadrant D14,237,7191,429,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0797593
B0599283
C0464993
D0548423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17974713439.690664%
B179747874.378547%
C179748164.539891%
D179756053.365786%

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 19894 17977 4355 4355 21.89% 24.23%
B 19894 17977 290 290 1.46% 1.61%
C 19894 17977 336 336 1.69% 1.87%
D 19895 17978 458 458 2.30% 2.55%

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 0 13 16276910 48626.31 1669 1632 334.7
A 15 174 33534 95.31 1669 1632 334.7
A 13 254 28113 79.12 1669 1632 334.7
B 6 159 5154234 12790.47 2123 2070 402.8
B 10 245 879584 2178.47 2123 2070 402.8
B 5 172 376123 928.6 2123 2070 402.8
C 3 233 3055915 6287.4 2062 2078 485.7
C 14 238 338262 692.15 2062 2078 485.7
C 10 22 215335 439.06 2062 2078 485.7
D 8 195 4216344 8423.62 2087 2030 500.3
D 13 249 828969 1652.89 2087 2030 500.3
D 2 250 540092 1075.48 2087 2030 500.3

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