ASTROSAT CZTI

Data Quality Report

Orbit 20635

Creation date: 2024-06-27T18:17:42.870834
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/AS1A05_007T06_9000003050_20635cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20635cztM0_level2_quad_clean.evt
Size (bytes)1,017,411,840180,941,760
Size970.3 MB 172.6 MB
Events in quadrant A6,848,2801,142,702
Events in quadrant B7,412,7451,134,361
Events in quadrant C7,191,5791,096,525
Events in quadrant D8,355,0381,081,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303335
B0316343
C0308773
D0350123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148531390.935838%
B148532031.366727%
C148531511.016630%
D148533642.450683%

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 32218 14857 16 16 0.05% 0.11%
B 32218 14857 47 47 0.15% 0.32%
C 32218 14856 0 0 0.00% 0.00%
D 32218 14857 308 308 0.96% 2.07%

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 5 16 120684 339.22 1745 1708 350.7
A 2 79 15475 39.25 1745 1708 350.7
A 0 226 15232 38.56 1745 1708 350.7
B 7 220 302937 924.23 1729 1684 325.9
B 0 197 94873 285.9 1729 1684 325.9
B 0 183 45454 134.28 1729 1684 325.9
C 8 208 403071 1037.45 1664 1671 386.9
C 14 238 260104 667.94 1664 1671 386.9
C 3 233 33990 83.53 1664 1671 386.9
D 1 52 786014 1928.43 1687 1642 406.7
D 5 222 353961 866.2 1687 1642 406.7
D 1 20 294309 719.54 1687 1642 406.7

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