ASTROSAT CZTI

Data Quality Report

Orbit 36175

Creation date: 2022-06-11T11:44:21.295243
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/AS1A10_071T50_9000005166_36175cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36175cztM0_level2_quad_clean.evt
Size (bytes)116,838,72012,470,400
Size111.4 MB 11.9 MB
Events in quadrant A726,18871,377
Events in quadrant B1,051,83371,024
Events in quadrant C875,18070,592
Events in quadrant D795,03767,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029272
B040121
C033931
D031681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128850.388199%
B1288584.503106%
C1288342.639752%
D1288211.630435%

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 3411 1289 0 0 0.00% 0.00%
B 3411 1289 31 31 0.91% 2.40%
C 3411 1289 33 33 0.97% 2.56%
D 3411 1289 13 13 0.38% 1.01%

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 10 83 68784 2001.86 162 159 34.3
A 9 143 23083 668.72 162 159 34.3
A 8 144 6000 170.39 162 159 34.3
B 4 171 164946 5083.11 159 154 32.4
B 5 236 121242 3735.04 159 154 32.4
B 0 213 57423 1766.5 159 154 32.4
C 0 10 151305 3947.98 155 155 38.3
C 15 214 62691 1633.41 155 155 38.3
C 15 208 39985 1040.34 155 155 38.3
D 1 52 86930 2192.89 155 151 39.6
D 13 249 43018 1083.24 155 151 39.6
D 2 153 19116 479.24 155 151 39.6

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