ASTROSAT CZTI

Data Quality Report

Orbit 35861

Creation date: 2022-06-08T19:25:38.702216
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_080T01_9000005146_35861cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35861cztM0_level2_quad_clean.evt
Size (bytes)723,271,68096,629,760
Size689.8 MB 92.2 MB
Events in quadrant A10,391,571479,450
Events in quadrant B3,639,205680,676
Events in quadrant C3,546,195679,152
Events in quadrant D3,903,992648,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349893
B0147032
C0142072
D0156502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6248314250.288092%
B62481652.640845%
C62481071.712548%
D62481021.632522%

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 8935 6250 2971 2971 33.25% 47.54%
B 8935 6250 92 92 1.03% 1.47%
C 8935 6250 73 73 0.82% 1.17%
D 8935 6250 79 79 0.88% 1.26%

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 7854963 62036.19 610 598 126.6
A 10 83 137975 1085.05 610 598 126.6
A 7 48 31598 244.85 610 598 126.6
B 5 172 386572 2756.3 735 720 140.0
B 0 213 243955 1737.53 735 720 140.0
B 4 232 37300 261.31 735 720 140.0
C 1 23 260902 1538.68 724 731 169.1
C 15 214 258502 1524.49 724 731 169.1
C 0 10 177675 1046.47 724 731 169.1
D 13 249 347651 1960.96 724 708 176.9
D 8 195 330538 1864.23 724 708 176.9
D 10 118 173943 979.14 724 708 176.9

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