ASTROSAT CZTI

Data Quality Report

Orbit 34714

Creation date: 2022-03-02T16:51:43.853462
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_038T41_9000004978_34714cztM0_level2.evt modeM0/AS1A09_038T41_9000004978_34714cztM0_level2_quad_clean.evt
Size (bytes)327,605,76071,657,280
Size312.4 MB 68.3 MB
Events in quadrant A2,288,100483,979
Events in quadrant B2,223,284483,589
Events in quadrant C1,830,813494,779
Events in quadrant D3,337,416456,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090711
B088421
C074731
D0123081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3555120.337553%
B35551464.106892%
C3555250.703235%
D35551805.063291%

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 3555 3555 4 4 0.11% 0.11%
B 3555 3555 115 115 3.23% 3.23%
C 3555 3555 15 15 0.42% 0.42%
D 3555 3555 189 189 5.32% 5.32%

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 15 169 575594 6700.56 422 414 85.8
A 10 83 27836 319.45 422 414 85.8
A 13 6 23157 264.94 422 414 85.8
B 5 172 284386 3672.73 407 399 77.3
B 0 182 183269 2365.01 407 399 77.3
B 4 81 47036 603.14 407 399 77.3
C 15 214 156643 1673.16 405 409 93.4
C 0 10 68680 731.14 405 409 93.4
C 14 67 11990 124.02 405 409 93.4
D 8 195 880985 8557.66 402 391 102.9
D 12 227 197695 1917.41 402 391 102.9
D 10 199 170543 1653.55 402 391 102.9

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