ASTROSAT CZTI

Data Quality Report

Orbit 21015

Creation date: 2024-06-27T18:22:26.786168
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/AS1A05_101T08_9000003102_21015cztM0_level2.evt modeM0/AS1A05_101T08_9000003102_21015cztM0_level2_quad_clean.evt
Size (bytes)456,526,08099,840,960
Size435.4 MB 95.2 MB
Events in quadrant A3,149,403644,819
Events in quadrant B3,399,798667,363
Events in quadrant C3,245,463646,236
Events in quadrant D3,589,399611,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135512
B0142472
C0136472
D0149402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496440.677340%
B6496931.431650%
C6496640.985222%
D64961291.985837%

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 7721 6497 0 0 0.00% 0.00%
B 7721 6497 29 29 0.38% 0.45%
C 7721 6497 0 0 0.00% 0.00%
D 7721 6497 97 97 1.26% 1.49%

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 0 226 7028 38.05 817 802 163.6
A 3 137 6669 35.85 817 802 163.6
A 12 194 5749 30.23 817 802 163.6
B 7 220 110370 715.79 824 805 153.1
B 0 189 22070 138.93 824 805 153.1
B 12 111 18328 114.48 824 805 153.1
C 14 238 125956 679.53 792 800 184.2
C 9 54 31009 164.02 792 800 184.2
C 13 61 5596 26.04 792 800 184.2
D 1 52 292897 1539.07 786 768 189.8
D 2 16 108065 565.29 786 768 189.8
D 7 238 64455 335.53 786 768 189.8

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