ASTROSAT CZTI

Data Quality Report

Orbit 00648

Creation date: 2024-06-27T14:00:58.765653
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/AS1P01_126T04_9000000092_00648cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00648cztM0_level2_quad_clean.evt
Size (bytes)357,782,40018,535,680
Size341.2 MB 17.7 MB
Events in quadrant A2,708,825101,302
Events in quadrant B2,680,657102,319
Events in quadrant C2,498,784100,946
Events in quadrant D2,796,35094,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096261
B095491
C089964
D098921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223320.089566%
B223320.089566%
C223210.044803%
D2232753.360215%

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 4387 2234 56 56 1.28% 2.51%
B 4387 2234 42 42 0.96% 1.88%
C 4386 2233 24 24 0.55% 1.07%
D 4386 2233 156 156 3.56% 6.99%

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 0 238 12087 74.64 691 687 152.7
A 15 53 7759 46.3 691 687 152.7
A 14 79 7312 43.38 691 687 152.7
B 5 249 8219 46.11 696 699 163.1
B 0 220 7652 42.63 696 699 163.1
B 15 255 4179 21.34 696 699 163.1
C 15 241 4579 21.97 634 660 178.4
C 1 16 2228 8.79 634 660 178.4
C -1 -1 -1 -1.0 634 660 178.4
D 1 4 255253 1337.39 601 624 190.4
D 12 237 68167 354.76 601 624 190.4
D 13 221 48969 253.92 601 624 190.4

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