ASTROSAT CZTI

Data Quality Report

Orbit 20960

Creation date: 2024-06-27T18:21:47.143708
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/AS1T03_131T01_9000003090_20960cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20960cztM0_level2_quad_clean.evt
Size (bytes)513,720,00067,939,200
Size489.9 MB 64.8 MB
Events in quadrant A3,484,532406,078
Events in quadrant B3,560,771416,273
Events in quadrant C3,406,152405,198
Events in quadrant D4,671,786382,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140432
B0142782
C0136652
D0179862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408510.795880%
B6408580.905119%
C6408691.076779%
D64082243.495630%

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 7768 6409 28 28 0.36% 0.44%
B 7768 6409 13 13 0.17% 0.20%
C 7768 6409 1 1 0.01% 0.02%
D 7768 6409 168 168 2.16% 2.62%

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 5 16 204635 1205.09 850 834 169.1
A 6 16 12018 66.13 850 834 169.1
A 0 226 7619 40.12 850 834 169.1
B 7 220 134254 840.91 856 839 158.7
B 3 64 23689 144.02 856 839 158.7
B 0 190 19046 114.76 856 839 158.7
C 14 238 131993 684.27 831 840 191.7
C 0 79 30278 153.59 831 840 191.7
C 13 61 5818 25.97 831 840 191.7
D 1 52 622738 3126.52 826 803 198.9
D 9 1 450591 2261.12 826 803 198.9
D 5 222 269014 1348.32 826 803 198.9

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