ASTROSAT CZTI

Data Quality Report

Orbit 12435

Creation date: 2024-06-27T16:27:18.556040
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/AS1A04_141T01_9000001848_12435cztM0_level2.evt modeM0/AS1A04_141T01_9000001848_12435cztM0_level2_quad_clean.evt
Size (bytes)592,943,04068,405,760
Size565.5 MB 65.2 MB
Events in quadrant A4,770,111410,727
Events in quadrant B5,308,317382,248
Events in quadrant C3,169,752426,294
Events in quadrant D4,272,133401,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187533
B0198282
C0135642
D0169042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64591652.554575%
B645983212.881251%
C6459881.362440%
D64592063.189348%

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 7480 6460 3 3 0.04% 0.05%
B 7480 6460 550 550 7.35% 8.51%
C 7480 6460 7 7 0.09% 0.11%
D 7480 6460 94 94 1.26% 1.46%

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 15 239 1189170 7303.12 798 780 162.7
A 13 251 180716 1105.78 798 780 162.7
A 1 162 117284 715.96 798 780 162.7
B 4 239 2093688 14398.68 774 757 145.4
B 3 64 97855 668.0 774 757 145.4
B 0 187 53057 359.81 774 757 145.4
C 15 208 67992 367.38 795 801 182.9
C 13 61 6043 28.66 795 801 182.9
C 14 234 2643 10.07 795 801 182.9
D 1 52 1122150 6037.09 779 757 185.8
D 13 104 143833 770.26 779 757 185.8
D 2 234 20765 107.71 779 757 185.8

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