ASTROSAT CZTI

Data Quality Report

Orbit 22149

Creation date: 2024-06-27T18:37:28.275944
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/AS1T03_145T01_9000003278_22149cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22149cztM0_level2_quad_clean.evt
Size (bytes)454,190,40099,293,760
Size433.1 MB 94.7 MB
Events in quadrant A3,174,581645,061
Events in quadrant B3,423,054655,187
Events in quadrant C3,494,799621,339
Events in quadrant D3,211,082622,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136341
B0143801
C0146061
D0139171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6639721.084501%
B66401171.762048%
C66401972.966867%
D6640550.828313%

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 7374 6640 0 0 0.00% 0.00%
B 7375 6641 6 6 0.08% 0.09%
C 7375 6641 76 76 1.03% 1.14%
D 7375 6641 3 3 0.04% 0.05%

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 10513 59.24 822 805 163.9
A 3 137 7058 38.16 822 805 163.9
A 0 226 7007 37.85 822 805 163.9
B 3 64 146965 937.26 816 795 156.0
B 10 246 61695 390.5 816 795 156.0
B 12 111 19135 117.6 816 795 156.0
C 10 22 327584 1790.68 781 787 182.5
C 14 238 124227 676.39 781 787 182.5
C 13 61 5306 24.76 781 787 182.5
D 1 52 132146 682.63 800 778 192.4
D 2 234 30119 152.46 800 778 192.4
D 7 222 20573 102.86 800 778 192.4

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