ASTROSAT CZTI

Data Quality Report

Orbit 07221

Creation date: 2024-06-27T15:17:05.441051
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_111T01_9000000986_07221cztM0_level2.evt modeM0/AS1A02_111T01_9000000986_07221cztM0_level2_quad_clean.evt
Size (bytes)461,162,880103,348,800
Size439.8 MB 98.6 MB
Events in quadrant A3,209,939675,370
Events in quadrant B3,526,776700,062
Events in quadrant C3,017,634679,355
Events in quadrant D3,772,166623,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139223
B0148512
C0133012
D0155852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471330.509968%
B6471971.498996%
C647190.139082%
D64712173.353423%

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 7761 6472 4 4 0.05% 0.06%
B 7761 6472 49 49 0.63% 0.76%
C 7761 6472 0 0 0.00% 0.00%
D 7761 6472 201 201 2.59% 3.11%

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 14 111 154254 991.48 766 752 154.8
A 13 248 48513 308.49 766 752 154.8
A 8 15 45318 287.85 766 752 154.8
B 10 16 167959 1142.67 783 766 146.3
B 4 81 137063 931.51 783 766 146.3
B 0 214 92521 627.09 783 766 146.3
C 9 68 30535 170.11 760 766 175.0
C 1 16 7497 38.46 760 766 175.0
C 8 128 6192 31.01 760 766 175.0
D 2 216 597272 3328.86 735 712 179.2
D 2 33 155481 863.63 735 712 179.2
D 2 14 102291 566.82 735 712 179.2

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