ASTROSAT CZTI

Data Quality Report

Orbit 07263

Creation date: 2024-06-27T15:17:40.972507
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/AS1A02_155T01_9000000994_07263cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07263cztM0_level2_quad_clean.evt
Size (bytes)447,935,04088,156,800
Size427.2 MB 84.1 MB
Events in quadrant A3,086,778560,620
Events in quadrant B3,331,109570,947
Events in quadrant C3,359,590554,030
Events in quadrant D3,347,160531,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135573
B0142462
C0142432
D0145432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6488811.248459%
B64881161.787916%
C6488701.078915%
D64881442.219482%

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 8708 6488 1 1 0.01% 0.02%
B 8708 6488 12 12 0.14% 0.18%
C 8708 6488 17 17 0.20% 0.26%
D 8708 6488 84 84 0.96% 1.29%

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 8 15 26154 159.19 790 773 159.4
A 15 174 10867 63.31 790 773 159.4
A 0 226 7606 42.86 790 773 159.4
B 0 214 69182 449.02 800 782 152.3
B 4 81 68547 444.86 800 782 152.3
B 4 239 42667 274.96 800 782 152.3
C 7 247 325762 1836.38 766 768 177.0
C 9 68 33009 182.18 766 768 177.0
C 1 16 6957 34.97 766 768 177.0
D 2 14 265092 1437.41 756 735 183.9
D 14 34 137846 745.52 756 735 183.9
D 2 33 66327 356.65 756 735 183.9

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