ASTROSAT CZTI

Data Quality Report

Orbit 06918

Creation date: 2024-06-27T15:13:05.771259
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/AS1A02_005T01_9000000948_06918cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06918cztM0_level2_quad_clean.evt
Size (bytes)480,553,92067,798,080
Size458.3 MB 64.7 MB
Events in quadrant A3,498,417401,868
Events in quadrant B3,437,008407,176
Events in quadrant C3,303,512402,162
Events in quadrant D3,872,569387,520

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144303
B0142112
C0137732
D0156232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65091492.289138%
B65091081.659241%
C6509991.520971%
D65092093.210939%

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 7809 6510 29 29 0.37% 0.45%
B 7809 6510 1 1 0.01% 0.02%
C 7809 6510 0 0 0.00% 0.00%
D 7809 6510 83 83 1.06% 1.27%

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 15 223 154862 897.65 857 841 171.6
A 0 128 39343 224.39 857 841 171.6
A 0 226 8474 44.49 857 841 171.6
B 0 214 40503 246.38 856 838 161.0
B 0 228 31167 188.39 856 838 161.0
B 4 173 18722 111.08 856 838 161.0
C 9 247 48741 253.94 829 836 188.6
C 13 61 6645 30.79 829 836 188.6
C 1 16 5807 26.35 829 836 188.6
D 2 33 270199 1329.23 831 807 202.7
D 1 20 205871 1011.83 831 807 202.7
D 8 195 67390 328.53 831 807 202.7

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