ASTROSAT CZTI

Data Quality Report

Orbit 00861

Creation date: 2024-06-27T14:03:57.096854
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/AS1P01_156T01_9000000122_00861cztM0_level2.evt modeM0/AS1P01_156T01_9000000122_00861cztM0_level2_quad_clean.evt
Size (bytes)1,130,713,92070,188,480
Size1.1 GB 66.9 MB
Events in quadrant A8,469,268415,177
Events in quadrant B9,033,175418,649
Events in quadrant C8,141,569412,384
Events in quadrant D8,140,524395,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301020
B0317740
C0291180
D0290770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6937330.475710%
B6936680.980392%
C6937370.533372%
D6937931.340637%

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 7487 6938 204 204 2.72% 2.94%
B 7486 6936 350 350 4.68% 5.05%
C 7487 6937 176 176 2.35% 2.54%
D 7487 6938 239 239 3.19% 3.44%

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 12 189 11870 18.14 2203 2222 531.8
A 0 214 7778 10.45 2203 2222 531.8
A 11 79 7174 9.31 2203 2222 531.8
B 0 184 166301 305.0 2267 2279 537.8
B 15 22 76944 138.84 2267 2279 537.8
B 0 23 53118 94.54 2267 2279 537.8
C 3 111 28633 46.04 2052 2131 575.6
C 8 208 25484 40.57 2052 2131 575.6
C 9 54 24727 39.26 2052 2131 575.6
D 11 131 304004 510.77 2049 2095 591.1
D 10 85 39811 63.81 2049 2095 591.1
D 2 16 37976 60.7 2049 2095 591.1

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