ASTROSAT CZTI

Data Quality Report

Orbit 31294

Creation date: 2024-06-27T20:26:15.411052
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/AS1T04_024T01_9000004530_31294cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31294cztM0_level2_quad_clean.evt
Size (bytes)958,705,920153,285,120
Size914.3 MB 146.2 MB
Events in quadrant A5,773,5451,008,501
Events in quadrant B8,923,1631,001,008
Events in quadrant C7,271,025915,257
Events in quadrant D6,323,508955,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236052
B0339942
C0290152
D0257652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110191000.907523%
B110192552.314185%
C110196035.472366%
D110191171.061802%

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 13534 11021 0 0 0.00% 0.00%
B 13534 11021 20 20 0.15% 0.18%
C 13534 11021 137 137 1.01% 1.24%
D 13534 11021 48 48 0.35% 0.44%

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 13 254 20387 64.54 1497 1474 293.0
A 3 137 14016 42.8 1497 1474 293.0
A 0 226 12753 38.49 1497 1474 293.0
B 6 159 2927787 10788.46 1456 1422 271.2
B 4 80 248050 909.23 1456 1422 271.2
B 12 111 32439 114.35 1456 1422 271.2
C 3 233 1194060 3844.54 1364 1374 310.2
C 14 238 296485 951.27 1364 1374 310.2
C 0 10 256028 820.86 1364 1374 310.2
D 8 195 536544 1569.78 1419 1388 340.9
D 12 233 210790 614.24 1419 1388 340.9
D 2 250 170339 495.59 1419 1388 340.9

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