ASTROSAT CZTI

Data Quality Report

Orbit 20180831_A04_143T01_9000002344_level2

Creation date: 2023-01-03T21:35:26.348197
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/AS1A04_143T01_9000002344cztM0_level2.fits modeM0/AS1A04_143T01_9000002344cztM0_level2_quad_clean.evt
Size (bytes)4,767,592,3204,629,389,760
Size4.4 GB 4.3 GB
Events in quadrant A28,549,93427,178,725
Events in quadrant B28,298,82028,379,192
Events in quadrant C28,818,37626,543,991
Events in quadrant D25,000,12224,400,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100460
B0100380
C0100400
D0100440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012260500
B010699720
C010451560
D010882110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08210
B08210
C08210
D08210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492232226914.609818%
B49216189751.823590%
C49222492341.875975%
D492205116572.368322%

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 614993 492251 0 0 0.00% 0.00%
B 614993 492560 0 0 0.00% 0.00%
C 614993 492604 0 0 0.00% 0.00%
D 614993 492363 0 0 0.00% 0.00%

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 29 27132 11.11 7436 6971 1815.0
A 7 110 22813 8.73 7436 6971 1815.0
A 0 30 21417 7.96 7436 6971 1815.0
B 2 9 22976 10.83 7486 7132 1462.3
B 2 8 19372 8.37 7486 7132 1462.3
B 3 17 18847 8.01 7486 7132 1462.3
C 1 80 21720 7.56 7609 7093 1933.8
C 1 81 21528 7.46 7609 7093 1933.8
C 12 241 19969 6.66 7609 7093 1933.8
D 3 14 18183 6.19 7146 6494 1887.7
D 6 231 18044 6.12 7146 6494 1887.7
D 7 3 17349 5.75 7146 6494 1887.7

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