ASTROSAT CZTI

Data Quality Report

Orbit 49770

Creation date: 2024-12-12T12:28:37.592320
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/AS1A13_037T01_9000006440_49770cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49770cztM0_level2_quad_clean.evt
Size (bytes)1,202,074,56055,298,880
Size1.1 GB 52.7 MB
Events in quadrant A10,163,881430,057
Events in quadrant B4,110,682645,445
Events in quadrant C14,008,40489,895
Events in quadrant D15,710,66753,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347911
B0165801
C0460921
D0510839

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527232135.559982%
B65273335.101884%
C6528569887.285539%
D6527602592.308871%

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 7072 6528 1948 1948 27.55% 29.84%
B 7072 6528 125 125 1.77% 1.91%
C 7073 6529 4519 4519 63.89% 69.21%
D 7073 6529 5537 5537 78.28% 84.81%

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 12 50 1478512 9051.73 626 613 163.3
A 15 63 1158286 7090.43 626 613 163.3
A 3 99 994367 6086.48 626 613 163.3
B 4 206 186163 1244.16 698 678 149.1
B 10 44 127792 852.63 698 678 149.1
B 0 200 110553 737.0 698 678 149.1
C 1 23 3233688 37306.7 258 252 86.7
C 15 197 1973050 22761.73 258 252 86.7
C 15 174 1395118 16093.67 258 252 86.7
D 8 129 2800985 28085.63 308 294 99.7
D 7 61 2038519 20439.54 308 294 99.7
D 15 168 1990154 19954.53 308 294 99.7

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