ASTROSAT CZTI

Data Quality Report

Orbit 26567

Creation date: 2024-06-27T19:30:23.814323
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_038T10_9000003844_26567cztM0_level2.evt modeM0/AS1A09_038T10_9000003844_26567cztM0_level2_quad_clean.evt
Size (bytes)766,797,120131,319,360
Size731.3 MB 125.2 MB
Events in quadrant A3,569,851931,230
Events in quadrant B4,223,240930,158
Events in quadrant C3,951,845912,541
Events in quadrant D10,985,754695,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152160
B0173280
C0163390
D0377400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7265470.646937%
B72663444.734379%
C72662193.014038%
D7266285439.278833%

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 7900 7267 2 2 0.03% 0.03%
B 7901 7268 210 210 2.66% 2.89%
C 7901 7268 53 53 0.67% 0.73%
D 7901 7266 2355 2355 29.81% 32.41%

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 108928 622.89 867 848 173.5
A 6 16 62704 356.49 867 848 173.5
A 5 168 50915 288.55 867 848 173.5
B 5 172 676596 4213.51 853 831 160.4
B 0 189 123433 764.44 853 831 160.4
B 3 112 40608 248.01 853 831 160.4
C 4 254 411034 2098.72 833 838 195.4
C 14 238 134036 681.49 833 838 195.4
C 3 233 132521 673.74 833 838 195.4
D 7 80 5863452 35319.42 682 661 166.0
D 1 52 2047326 12329.8 682 661 166.0
D 2 250 310552 1866.89 682 661 166.0

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