ASTROSAT CZTI

Data Quality Report

Orbit 36462

Creation date: 2022-06-27T17:52:47.366096
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/AS1A09_014T01_9000005204_36462cztM0_level2.evt modeM0/AS1A09_014T01_9000005204_36462cztM0_level2_quad_clean.evt
Size (bytes)119,171,52017,645,760
Size113.7 MB 16.8 MB
Events in quadrant A830,696109,359
Events in quadrant B939,772108,552
Events in quadrant C888,591106,222
Events in quadrant D849,081102,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033512
B037141
C034411
D034121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144270.485437%
B1442171.178918%
C1442392.704577%
D1442110.762829%

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 3385 1443 2 2 0.06% 0.14%
B 3385 1443 10 10 0.30% 0.69%
C 3385 1443 21 21 0.62% 1.46%
D 3385 1443 6 6 0.18% 0.42%

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 74842 1899.13 189 187 39.3
A 7 3 13271 332.84 189 187 39.3
A 9 143 6352 156.83 189 187 39.3
B 5 172 102502 2816.42 185 181 36.3
B 0 213 28326 774.7 185 181 36.3
B 5 255 21401 584.09 185 181 36.3
C 0 10 127005 3022.22 177 178 42.0
C 15 214 69680 1656.2 177 178 42.0
C 0 207 2030 44.13 177 178 42.0
D 2 250 42854 951.8 180 175 44.8
D 2 137 22046 487.75 180 175 44.8
D 13 249 17589 388.36 180 175 44.8

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