ASTROSAT CZTI

Data Quality Report

Orbit 26893

Creation date: 2024-06-27T19:34:09.558653
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_038T17_9000003884_26893cztM0_level2.evt modeM0/AS1A09_038T17_9000003884_26893cztM0_level2_quad_clean.evt
Size (bytes)523,607,040136,039,680
Size499.4 MB 129.7 MB
Events in quadrant A3,682,225913,044
Events in quadrant B4,247,080946,553
Events in quadrant C3,435,038926,942
Events in quadrant D4,056,858885,082

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149270
B0167250
C0140490
D0162050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438350.543647%
B64382203.417210%
C6438510.792171%
D64381231.910531%

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 7773 6439 8 8 0.10% 0.12%
B 7773 6438 113 113 1.45% 1.76%
C 7773 6439 0 0 0.00% 0.00%
D 7773 6438 111 111 1.43% 1.72%

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 288313 1737.94 842 828 165.4
A 6 16 144828 870.53 842 828 165.4
A 13 254 10319 57.38 842 828 165.4
B 3 64 734778 4718.59 850 831 155.5
B 0 190 114973 733.83 850 831 155.5
B 10 246 75126 477.65 850 831 155.5
C 14 238 137936 702.11 845 851 195.2
C 15 208 6654 29.72 845 851 195.2
C 13 61 5691 24.79 845 851 195.2
D 1 52 492684 2578.93 822 805 190.7
D 11 176 261923 1369.04 822 805 190.7
D 2 250 101107 525.88 822 805 190.7

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