ASTROSAT CZTI

Data Quality Report

Orbit 19512

Creation date: 2024-06-27T18:03:40.129753
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_175T01_9000002894_19512cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19512cztM0_level2_quad_clean.evt
Size (bytes)498,392,64068,440,320
Size475.3 MB 65.3 MB
Events in quadrant A3,425,999419,737
Events in quadrant B3,462,339423,618
Events in quadrant C3,521,195394,777
Events in quadrant D4,250,709388,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138112
B0138972
C0141652
D0166052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63951111.735731%
B63941131.767282%
C63941271.986237%
D63943034.738818%

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 7675 6396 1 1 0.01% 0.02%
B 7674 6395 6 6 0.08% 0.09%
C 7674 6395 0 0 0.00% 0.00%
D 7674 6395 201 201 2.62% 3.14%

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 13 254 8195 41.78 888 871 175.3
A 0 226 7774 39.37 888 871 175.3
A 3 137 6580 32.56 888 871 175.3
B 12 111 19176 112.05 874 855 163.5
B 11 111 17049 99.04 874 855 163.5
B 14 111 15479 89.44 874 855 163.5
C 14 238 132479 688.66 827 834 191.2
C 9 221 89975 466.32 827 834 191.2
C 3 233 52088 268.12 827 834 191.2
D 12 218 460054 2292.75 839 816 200.3
D 5 222 375229 1869.26 839 816 200.3
D 10 50 122602 608.02 839 816 200.3

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