ASTROSAT CZTI

Data Quality Report

Orbit 15688

Creation date: 2024-06-27T17:12:08.004961
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/AS1T02_088T01_9000002320_15688cztM0_level2.evt modeM0/AS1T02_088T01_9000002320_15688cztM0_level2_quad_clean.evt
Size (bytes)98,835,84020,704,320
Size94.3 MB 19.7 MB
Events in quadrant A668,497133,223
Events in quadrant B700,271139,613
Events in quadrant C753,442131,579
Events in quadrant D781,849126,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027222
B028151
C030431
D031861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126840.315457%
B126880.630915%
C1268161.261830%
D1268110.867508%

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 1269 1269 0 0 0.00% 0.00%
B 1269 1269 0 0 0.00% 0.00%
C 1269 1269 2 2 0.16% 0.16%
D 1269 1269 12 12 0.95% 0.95%

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 1604 39.83 173 170 36.0
A 13 210 1380 33.61 173 170 36.0
A 12 194 1238 29.66 173 170 36.0
B 4 173 4153 112.01 178 174 35.5
B 12 111 3705 99.4 178 174 35.5
B 11 111 3097 82.28 178 174 35.5
C 3 233 35196 867.21 169 171 40.4
C 0 207 29866 735.24 169 171 40.4
C 14 238 26285 646.57 169 171 40.4
D 1 52 123820 2931.74 168 163 42.2
D 10 40 4998 114.63 168 163 42.2
D 10 70 4637 106.07 168 163 42.2

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