ASTROSAT CZTI

Data Quality Report

Orbit 20539

Creation date: 2024-06-27T18:16:34.138081
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_022T08_9000003036_20539cztM0_level2.evt modeM0/AS1A05_022T08_9000003036_20539cztM0_level2_quad_clean.evt
Size (bytes)496,365,12091,255,680
Size473.4 MB 87.0 MB
Events in quadrant A3,417,107610,155
Events in quadrant B3,366,547621,583
Events in quadrant C3,440,172576,836
Events in quadrant D4,397,577531,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139372
B0137402
C0139882
D0169862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6057801.320786%
B6057741.221727%
C60571061.750041%
D60574337.148754%

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 7427 6058 35 35 0.47% 0.58%
B 7427 6058 6 6 0.08% 0.10%
C 7427 6058 6 6 0.08% 0.10%
D 7427 6058 355 355 4.78% 5.86%

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 6 16 290071 1788.26 806 793 161.8
A 14 254 12224 70.66 806 793 161.8
A 15 222 8518 47.75 806 793 161.8
B 0 189 51988 335.13 807 791 152.8
B 7 220 46695 300.48 807 791 152.8
B 0 190 38688 248.07 807 791 152.8
C 9 221 224503 1260.38 761 767 177.5
C 14 238 120244 673.05 761 767 177.5
C 8 208 78365 437.14 761 767 177.5
D 1 52 564362 3159.12 741 720 178.4
D 12 238 382438 2139.47 741 720 178.4
D 7 38 317004 1772.72 741 720 178.4

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