ASTROSAT CZTI

Data Quality Report

Orbit 26708

Creation date: 2024-06-27T19:31:57.885582
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_145T01_9000003848_26708cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26708cztM0_level2_quad_clean.evt
Size (bytes)573,943,68074,116,800
Size547.4 MB 70.7 MB
Events in quadrant A3,273,509468,320
Events in quadrant B3,446,729468,396
Events in quadrant C3,924,134445,692
Events in quadrant D6,315,431426,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132500
B0138190
C0155660
D0230180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6230651.043339%
B6230841.348315%
C62301582.536116%
D623080912.985554%

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 7300 6231 1 1 0.01% 0.02%
B 7300 6231 7 7 0.10% 0.11%
C 7300 6231 35 35 0.48% 0.56%
D 7300 6231 586 586 8.03% 9.40%

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 69138 413.04 829 815 165.4
A 13 254 11068 61.98 829 815 165.4
A 3 137 7326 39.36 829 815 165.4
B 0 189 102562 661.91 813 798 153.7
B 3 112 51203 327.85 813 798 153.7
B 4 200 30135 190.82 813 798 153.7
C 3 233 704236 3890.6 780 787 180.8
C 14 238 125911 692.03 780 787 180.8
C 15 208 29934 161.2 780 787 180.8
D 7 80 2448581 13119.59 764 742 186.6
D 1 52 816443 4371.88 764 742 186.6
D 2 250 102546 545.64 764 742 186.6

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