ASTROSAT CZTI

Data Quality Report

Orbit 17285

Creation date: 2024-06-27T17:34:30.849892
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/AS1T03_059T01_9000002554_17285cztM0_level2.evt modeM0/AS1T03_059T01_9000002554_17285cztM0_level2_quad_clean.evt
Size (bytes)611,928,00080,596,800
Size583.6 MB 76.9 MB
Events in quadrant A3,006,995537,077
Events in quadrant B2,971,274545,229
Events in quadrant C3,033,113512,178
Events in quadrant D9,093,392405,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133162
B0129482
C0131402
D0313712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6302210.333228%
B6302280.444303%
C6302430.682323%
D6302232536.893050%

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 7142 6303 7 7 0.10% 0.11%
B 7142 6303 1 1 0.01% 0.02%
C 7142 6303 2 2 0.03% 0.03%
D 7142 6302 2100 2100 29.40% 33.32%

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 23 80294 520.71 750 736 152.8
A 4 2 37953 243.59 750 736 152.8
A 0 226 11271 68.95 750 736 152.8
B 12 111 17541 115.16 753 736 145.9
B 11 111 15220 99.25 753 736 145.9
B 14 111 13191 85.35 753 736 145.9
C 14 238 110633 651.92 717 722 168.6
C 5 112 76833 451.44 717 722 168.6
C 3 233 51923 303.69 717 722 168.6
D 11 176 6426475 43988.02 602 585 146.1
D 13 232 174897 1193.24 602 585 146.1
D 10 70 95137 647.25 602 585 146.1

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