ASTROSAT CZTI

Data Quality Report

Orbit 34142

Creation date: 2024-06-27T20:57:02.497337
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/AS1A11_059T05_9000004876_34142cztM0_level2.evt modeM0/AS1A11_059T05_9000004876_34142cztM0_level2_quad_clean.evt
Size (bytes)662,713,92066,744,000
Size632.0 MB 63.7 MB
Events in quadrant A2,565,008444,781
Events in quadrant B8,957,578342,533
Events in quadrant C3,504,247430,546
Events in quadrant D4,660,968406,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114263
B0302412
C0140132
D0176872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564950.088511%
B5649282049.920340%
C56491733.062489%
D56492193.876792%

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 7262 5650 1 1 0.01% 0.02%
B 7262 5650 2761 2761 38.02% 48.87%
C 7262 5650 144 144 1.98% 2.55%
D 7262 5650 214 214 2.95% 3.79%

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 10 83 21819 159.67 655 642 132.6
A 13 254 11242 79.92 655 642 132.6
A 3 137 6772 46.22 655 642 132.6
B 5 31 3615976 34971.93 537 523 103.4
B 5 15 2386092 23075.38 537 523 103.4
B 5 14 654862 6329.36 537 523 103.4
C 0 10 652341 4472.93 626 632 145.7
C 15 214 242426 1659.52 626 632 145.7
C 14 254 126506 863.92 626 632 145.7
D 8 195 1113609 7263.07 626 608 153.2
D 10 118 620009 4042.0 626 608 153.2
D 7 80 198424 1290.88 626 608 153.2

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