ASTROSAT CZTI

Data Quality Report

Orbit 26682

Creation date: 2024-06-27T19:31:44.461833
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_26682cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26682cztM0_level2_quad_clean.evt
Size (bytes)652,821,12090,339,840
Size622.6 MB 86.2 MB
Events in quadrant A3,932,985566,609
Events in quadrant B4,303,895569,594
Events in quadrant C4,347,468541,795
Events in quadrant D6,668,259525,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163170
B0175470
C0175400
D0249180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76482112.758891%
B76493033.961302%
C76493804.967970%
D7648104713.689854%

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 8313 7651 1 1 0.01% 0.01%
B 8314 7652 5 5 0.06% 0.07%
C 8314 7652 50 50 0.60% 0.65%
D 8313 7651 532 532 6.40% 6.95%

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 4 2 59240 291.25 995 975 200.1
A 0 13 32691 158.54 995 975 200.1
A 13 254 12892 59.57 995 975 200.1
B 0 189 242002 1279.07 982 957 188.5
B 10 246 102245 537.47 982 957 188.5
B 5 172 62716 327.71 982 957 188.5
C 3 233 253040 1129.46 942 948 223.2
C 14 238 151368 673.93 942 948 223.2
C 2 16 148534 661.23 942 948 223.2
D 1 52 1923030 8468.09 923 896 227.0
D 7 80 614531 2703.41 923 896 227.0
D 2 250 380016 1670.24 923 896 227.0

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