ASTROSAT CZTI

Data Quality Report

Orbit 36579

Creation date: 2024-06-27T21:28:41.445372
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_097T17_9000005222_36579cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36579cztM0_level2_quad_clean.evt
Size (bytes)480,824,64073,563,840
Size458.6 MB 70.2 MB
Events in quadrant A2,931,173487,300
Events in quadrant B2,873,733490,712
Events in quadrant C3,546,965470,164
Events in quadrant D4,872,806430,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116083
B0114812
C0135712
D0179772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981531.064043%
B4981350.702670%
C49812254.517165%
D49814228.472194%

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 7044 4982 34 34 0.48% 0.68%
B 7044 4982 13 13 0.18% 0.26%
C 7044 4982 167 167 2.37% 3.35%
D 7044 4982 360 360 5.11% 7.23%

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 193116 1463.65 664 655 131.5
A 15 223 155468 1177.34 664 655 131.5
A 9 143 12801 92.37 664 655 131.5
B 0 190 87507 713.03 655 641 121.8
B 0 213 76045 618.94 655 641 121.8
B 0 189 65280 530.58 655 641 121.8
C 0 10 765068 5410.82 618 626 141.3
C 15 214 212175 1497.37 618 626 141.3
C 14 254 79790 560.33 618 626 141.3
D 12 235 1188709 7936.36 622 606 149.7
D 2 250 241161 1606.87 622 606 149.7
D 10 199 235430 1568.59 622 606 149.7

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