ASTROSAT CZTI

Data Quality Report

Orbit 18564

Creation date: 2024-06-27T17:51:38.164173
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/AS1A05_188T01_9000002756_18564cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18564cztM0_level2_quad_clean.evt
Size (bytes)284,829,12046,572,480
Size271.6 MB 44.4 MB
Events in quadrant A1,880,969279,888
Events in quadrant B2,021,639288,082
Events in quadrant C1,894,204275,641
Events in quadrant D2,538,076265,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085410
B088470
C085420
D0104640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A426010.023474%
B4261200.469373%
C4261120.281624%
D42611062.487679%

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 4260 4260 0 0 0.00% 0.00%
B 4261 4261 11 11 0.26% 0.26%
C 4261 4261 0 0 0.00% 0.00%
D 4261 4261 61 61 1.43% 1.43%

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 4 2 8362 79.7 485 474 99.0
A 13 254 6615 62.05 485 474 99.0
A 0 226 4222 37.87 485 474 99.0
B 4 80 108563 1148.43 487 475 94.1
B 12 111 11259 114.58 487 475 94.1
B 11 111 9679 97.79 487 475 94.1
C 14 238 73881 667.5 465 468 110.0
C 9 54 6225 52.34 465 468 110.0
C 13 61 3345 26.16 465 468 110.0
D 1 52 588317 5105.95 466 451 115.1
D 7 238 170602 1477.86 466 451 115.1
D 2 234 18945 160.63 466 451 115.1

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