ASTROSAT CZTI

Data Quality Report

Orbit 28278

Creation date: 2024-06-27T19:49:58.590491
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/AS1A10_102T06_9000004078_28278cztM0_level2.evt modeM0/AS1A10_102T06_9000004078_28278cztM0_level2_quad_clean.evt
Size (bytes)965,577,600171,599,040
Size920.8 MB 163.6 MB
Events in quadrant A6,135,5611,096,569
Events in quadrant B6,355,2881,106,580
Events in quadrant C6,209,8171,061,329
Events in quadrant D9,652,8941,024,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268540
B0274300
C0270000
D0375850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131361411.073386%
B131361971.499695%
C131352191.667301%
D131358286.303769%

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 15191 13136 0 0 0.00% 0.00%
B 15191 13137 28 28 0.18% 0.21%
C 15190 13136 9 9 0.06% 0.07%
D 15190 13136 545 545 3.59% 4.15%

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 15 169 53830 164.65 1575 1539 317.6
A 13 254 22762 66.82 1575 1539 317.6
A 3 137 15392 43.62 1575 1539 317.6
B 4 200 83482 278.06 1556 1517 294.8
B 15 32 50338 165.62 1556 1517 294.8
B 0 230 37951 123.6 1556 1517 294.8
C 14 238 240517 682.77 1500 1504 350.1
C 15 208 81017 227.14 1500 1504 350.1
C 3 233 49438 136.93 1500 1504 350.1
D 1 52 2642127 7457.8 1486 1443 354.1
D 12 250 553419 1558.89 1486 1443 354.1
D 8 195 383579 1079.23 1486 1443 354.1

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