ASTROSAT CZTI

Data Quality Report

Orbit 13765

Creation date: 2024-06-27T16:45:47.406056
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/AS1G08_062T01_9000002038_13765cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13765cztM0_level2_quad_clean.evt
Size (bytes)538,237,440112,380,480
Size513.3 MB 107.2 MB
Events in quadrant A3,477,560736,164
Events in quadrant B3,546,118742,937
Events in quadrant C3,320,145767,070
Events in quadrant D5,516,335704,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144843
B0147172
C0139092
D0207502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489610.940052%
B6489620.955463%
C6489370.570196%
D64895107.859454%

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 7840 6491 35 35 0.45% 0.54%
B 7840 6491 18 18 0.23% 0.28%
C 7840 6491 4 4 0.05% 0.06%
D 7840 6491 316 316 4.03% 4.87%

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 9 143 258758 1559.5 824 810 165.4
A 1 162 18330 105.92 824 810 165.4
A 0 23 14598 83.36 824 810 165.4
B 0 219 213772 1380.27 829 811 154.3
B 10 244 34296 217.03 829 811 154.3
B 12 111 17099 105.57 829 811 154.3
C 3 233 130482 690.67 814 821 187.7
C 6 253 8160 39.09 814 821 187.7
C 14 234 6836 32.04 814 821 187.7
D 5 222 1369630 7236.66 778 758 189.2
D 1 52 606705 3203.39 778 758 189.2
D 13 249 344446 1816.94 778 758 189.2

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