ASTROSAT CZTI

Data Quality Report

Orbit 18254

Creation date: 2024-06-27T17:47:26.524350
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_019T01_9000002718_18254cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18254cztM0_level2_quad_clean.evt
Size (bytes)475,102,080100,454,400
Size453.1 MB 95.8 MB
Events in quadrant A3,407,348667,031
Events in quadrant B3,373,698675,304
Events in quadrant C3,238,886628,354
Events in quadrant D3,926,736618,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140012
B0138922
C0136343
D0157442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64961412.170567%
B64961492.293719%
C64951422.186297%
D64951382.124711%

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 7606 6497 15 15 0.20% 0.23%
B 7606 6497 1 1 0.01% 0.02%
C 7605 6496 0 0 0.00% 0.00%
D 7605 6496 74 74 0.97% 1.14%

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 15 174 118778 687.95 855 838 171.4
A 0 226 7689 39.96 855 838 171.4
A 12 194 6355 32.18 855 838 171.4
B 7 220 53279 327.11 845 826 160.4
B 12 111 18711 111.53 845 826 160.4
B 11 111 16371 96.94 845 826 160.4
C 14 238 126324 674.2 798 800 186.2
C 13 61 5528 25.39 798 800 186.2
C 3 233 3230 13.05 798 800 186.2
D 7 238 653363 3292.6 819 794 198.2
D 1 52 92285 461.63 819 794 198.2
D 7 96 32992 162.46 819 794 198.2

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