ASTROSAT CZTI

Data Quality Report

Orbit 01194

Creation date: 2024-06-27T14:08:57.223009
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/AS1G04_007T02_9000000220_01194cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01194cztM0_level2_quad_clean.evt
Size (bytes)1,199,779,200103,898,880
Size1.1 GB 99.1 MB
Events in quadrant A8,237,856688,969
Events in quadrant B8,732,091678,732
Events in quadrant C8,514,137660,018
Events in quadrant D10,386,439629,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294372
B0309081
C0302701
D0359721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A702640.056931%
B7026180.256191%
C702660.085397%
D702677811.073157%

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 7646 7026 161 161 2.11% 2.29%
B 7646 7026 254 254 3.32% 3.62%
C 7645 7026 178 178 2.33% 2.53%
D 7646 7027 1600 1600 20.93% 22.77%

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 4 32 19956 34.71 2133 2150 513.0
A 11 79 10320 15.92 2133 2150 513.0
A 13 9 8598 12.57 2133 2150 513.0
B 6 53 160823 302.26 2231 2242 524.6
B 10 244 20009 33.86 2231 2242 524.6
B 15 22 18490 30.97 2231 2242 524.6
C 15 241 389797 672.62 2061 2137 576.3
C 3 111 27931 44.75 2061 2137 576.3
C 3 79 25354 40.28 2061 2137 576.3
D 1 239 2600532 4296.85 1955 2028 604.7
D 10 85 224791 368.36 1955 2028 604.7
D 2 16 67441 108.17 1955 2028 604.7

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