ASTROSAT CZTI

Data Quality Report

Orbit 26095

Creation date: 2024-06-27T19:24:39.239848
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/AS1A09_018T01_9000003774_26095cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26095cztM0_level2_quad_clean.evt
Size (bytes)472,803,84081,961,920
Size450.9 MB 78.2 MB
Events in quadrant A3,203,709521,806
Events in quadrant B3,269,938535,413
Events in quadrant C3,264,041495,624
Events in quadrant D4,144,009479,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133600
B0135680
C0135150
D0165740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435320.497280%
B6434340.528443%
C6434651.010258%
D6434861.336649%

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 7585 6435 0 0 0.00% 0.00%
B 7584 6434 0 0 0.00% 0.00%
C 7584 6434 0 0 0.00% 0.00%
D 7584 6434 51 51 0.67% 0.79%

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 10438 58.09 829 812 165.7
A 3 137 7568 40.77 829 812 165.7
A 0 226 7166 38.35 829 812 165.7
B 12 111 19308 117.02 830 813 158.0
B 11 111 16934 102.0 830 813 158.0
B 14 111 15507 92.97 830 813 158.0
C 14 238 129091 697.03 787 793 184.1
C 3 233 61551 330.09 787 793 184.1
C 13 61 5421 25.14 787 793 184.1
D 1 52 1025232 5451.81 786 766 187.9
D 7 80 95918 506.36 786 766 187.9
D 2 234 26185 135.27 786 766 187.9

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