ASTROSAT CZTI

Data Quality Report

Orbit 11834

Creation date: 2024-06-27T16:18:54.515244
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/AS1A04_022T07_9000001748_11834cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11834cztM0_level2_quad_clean.evt
Size (bytes)258,995,52052,862,400
Size247.0 MB 50.4 MB
Events in quadrant A1,501,641354,285
Events in quadrant B2,509,991344,276
Events in quadrant C1,302,447355,820
Events in quadrant D2,326,912334,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064441
B096111
C060381
D090171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2962180.607698%
B29621324.456448%
C296250.168805%
D29621083.646185%

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 2963 2963 1 1 0.03% 0.03%
B 2963 2963 77 77 2.60% 2.60%
C 2963 2963 2 2 0.07% 0.07%
D 2963 2963 84 84 2.83% 2.83%

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 1 162 68360 967.46 336 327 70.3
A 13 251 36846 519.32 336 327 70.3
A 1 178 34668 488.34 336 327 70.3
B 15 204 588097 9225.59 329 322 63.7
B 4 239 372929 5848.36 329 322 63.7
B 10 16 123189 1928.49 329 322 63.7
C 7 238 18949 236.77 328 329 78.6
C 7 205 2934 33.12 328 329 78.6
C 13 61 2438 26.82 328 329 78.6
D 8 195 290414 3645.91 326 316 79.6
D 1 52 224991 2823.69 326 316 79.6
D 13 249 174862 2193.67 326 316 79.6

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