ASTROSAT CZTI

Data Quality Report

Orbit 26303

Creation date: 2024-06-27T19:27:13.036421
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_143T03_9000003794_26303cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26303cztM0_level2_quad_clean.evt
Size (bytes)446,201,28093,306,240
Size425.5 MB 89.0 MB
Events in quadrant A3,315,234591,306
Events in quadrant B3,271,432613,679
Events in quadrant C3,320,482585,238
Events in quadrant D3,158,674576,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139310
B0137470
C0137870
D0136700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6578380.577683%
B6578530.805716%
C6578681.033749%
D6578170.258437%

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 7573 6579 5 5 0.07% 0.08%
B 7573 6579 2 2 0.03% 0.03%
C 7573 6579 0 0 0.00% 0.00%
D 7573 6579 9 9 0.12% 0.14%

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 0 13 118356 705.45 828 812 166.6
A 13 254 10336 57.16 828 812 166.6
A 3 137 7492 40.09 828 812 166.6
B 12 111 19316 115.94 831 812 159.6
B 11 111 17003 101.45 831 812 159.6
B 14 111 15749 93.59 831 812 159.6
C 14 238 126653 665.11 808 816 189.2
C 3 233 25427 130.08 808 816 189.2
C 2 16 23950 122.27 808 816 189.2
D 11 176 44688 223.97 814 795 196.0
D 2 234 25155 124.3 814 795 196.0
D 8 195 23432 115.51 814 795 196.0

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