ASTROSAT CZTI

Data Quality Report

Orbit 17075

Creation date: 2024-06-27T17:31:42.123239
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_004T01_9000002532_17075cztM0_level2.evt modeM0/AS1T03_004T01_9000002532_17075cztM0_level2_quad_clean.evt
Size (bytes)87,848,64023,555,520
Size83.8 MB 22.5 MB
Events in quadrant A586,475159,249
Events in quadrant B670,649159,993
Events in quadrant C600,349154,264
Events in quadrant D719,591149,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024561
B026781
C024661
D028781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118120.169348%
B118130.254022%
C1181110.931414%
D1181131.100762%

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 1181 1181 0 0 0.00% 0.00%
B 1181 1181 0 0 0.00% 0.00%
C 1181 1181 0 0 0.00% 0.00%
D 1181 1181 8 8 0.68% 0.68%

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 4 2 2055 58.57 152 148 32.6
A 0 226 1353 37.01 152 148 32.6
A 12 194 1139 30.44 152 148 32.6
B 6 36 64746 2107.55 150 146 30.7
B 0 197 10180 327.36 150 146 30.7
B 12 111 3182 99.05 150 146 30.7
C 14 238 22577 640.15 143 143 35.0
C 3 233 16024 453.16 143 143 35.0
C 7 247 2200 58.7 143 143 35.0
D 5 222 136894 3607.34 148 142 37.9
D 10 70 7313 189.16 148 142 37.9
D 2 234 5027 128.86 148 142 37.9

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