ASTROSAT CZTI

Data Quality Report

Orbit 08798

Creation date: 2024-06-27T15:37:21.895337
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/AS1G07_010T03_9000001224_08798cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08798cztM0_level2_quad_clean.evt
Size (bytes)553,573,44094,147,200
Size527.9 MB 89.8 MB
Events in quadrant A4,123,124607,522
Events in quadrant B3,238,008618,886
Events in quadrant C3,149,424602,876
Events in quadrant D5,820,113574,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166002
B0136761
C0134491
D0216781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64132173.383752%
B6413630.982380%
C6413450.701700%
D64134707.328863%

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 7638 6413 106 106 1.39% 1.65%
B 7638 6413 0 0 0.00% 0.00%
C 7638 6413 1 1 0.01% 0.02%
D 7638 6413 324 324 4.24% 5.05%

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 5 571742 3403.84 831 814 167.7
A 15 223 239367 1422.24 831 814 167.7
A 15 239 79522 469.25 831 814 167.7
B 12 111 17289 105.21 829 810 156.6
B 11 111 13990 84.15 829 810 156.6
B 5 174 13313 79.83 829 810 156.6
C 13 61 6081 28.49 806 809 185.0
C 12 4 5443 25.05 806 809 185.0
C 8 222 2396 8.58 806 809 185.0
D 2 16 1520292 7774.94 781 761 195.4
D 13 122 668013 3414.11 781 761 195.4
D 4 95 283288 1445.6 781 761 195.4

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