ASTROSAT CZTI

Data Quality Report

Orbit 11510

Creation date: 2024-06-27T16:14:01.350795
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_021T06_9000001688_11510cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11510cztM0_level2_quad_clean.evt
Size (bytes)645,554,88093,798,720
Size615.6 MB 89.5 MB
Events in quadrant A7,447,240550,399
Events in quadrant B4,374,920587,285
Events in quadrant C3,163,079630,611
Events in quadrant D4,097,525590,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269402
B0174191
C0141951
D0168061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6911113016.350745%
B69112223.212270%
C6911370.535378%
D69111702.459847%

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 7457 6913 755 755 10.12% 10.92%
B 7457 6913 87 87 1.17% 1.26%
C 7457 6913 0 0 0.00% 0.00%
D 7457 6913 86 86 1.15% 1.24%

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 8 5 3176535 20111.04 774 758 157.9
A 14 238 971125 6144.98 774 758 157.9
A 15 223 101552 638.29 774 758 157.9
B 4 239 441907 2841.24 812 794 155.3
B 3 64 411912 2648.04 812 794 155.3
B 11 51 192374 1233.98 812 794 155.3
C 13 61 5923 26.89 811 816 189.9
C 3 202 1984 6.15 811 816 189.9
C -1 -1 -1 -1.0 811 816 189.9
D 1 52 301689 1551.87 806 784 193.9
D 2 120 202102 1038.27 806 784 193.9
D 8 195 170151 873.48 806 784 193.9

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