ASTROSAT CZTI

Data Quality Report

Orbit 20230422_A12_102T01_9000005576_level2

Creation date: 2023-04-24T12:19:36.688945
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/AS1A12_102T01_9000005576cztM0_level2.fits modeM0/AS1A12_102T01_9000005576cztM0_level2_quad_clean.evt
Size (bytes)449,530,560567,201,600
Size428.7 MB 540.9 MB
Events in quadrant A2,677,2763,559,256
Events in quadrant B2,544,8683,548,185
Events in quadrant C2,652,6043,476,184
Events in quadrant D2,262,4843,119,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010380
C010380
D010380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01085190
B01177450
C01064300
D01264160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506471070.211266%
B5064714792.920212%
C506473410.673288%
D5064312782.523547%

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 69433 50646 0 0 0.00% 0.00%
B 69433 50630 0 0 0.00% 0.00%
C 69433 50644 0 0 0.00% 0.00%
D 69433 50628 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 9 19 2206 8.91 698 656 173.9
A 7 110 2189 8.82 698 656 173.9
A 0 29 2153 8.61 698 656 173.9
B 2 9 2172 11.6 674 643 131.8
B 3 80 1809 8.85 674 643 131.8
B 2 8 1738 8.31 674 643 131.8
C 1 81 2212 8.65 701 657 179.9
C 3 202 2119 8.13 701 657 179.9
C 1 80 2100 8.02 701 657 179.9
D 4 160 1717 6.51 648 592 172.7
D 10 189 1684 6.32 648 592 172.7
D 15 46 1623 5.97 648 592 172.7

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