ASTROSAT CZTI

Data Quality Report

Orbit 42983

Creation date: 2024-06-27T22:46:33.141203
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/AS1T05_148T01_9000005838_42983cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42983cztM0_level2_quad_clean.evt
Size (bytes)370,848,960100,779,840
Size353.7 MB 96.1 MB
Events in quadrant A3,012,834734,035
Events in quadrant B4,013,198681,994
Events in quadrant C2,493,315706,488
Events in quadrant D3,828,176586,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120752
B0153362
C0101802
D0146602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884270.552826%
B48843948.067158%
C488440.081900%
D48844138.456183%

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 7007 4885 16 16 0.23% 0.33%
B 7007 4885 238 238 3.40% 4.87%
C 7007 4885 2 2 0.03% 0.04%
D 7007 4885 399 399 5.69% 8.17%

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 569907 4198.87 601 591 135.6
A 15 237 45512 331.31 601 591 135.6
A 15 222 39897 289.89 601 591 135.6
B 4 81 1240883 10317.25 571 559 120.2
B 4 171 472722 3927.54 571 559 120.2
B 5 172 26192 213.22 571 559 120.2
C 15 214 199388 1349.84 583 589 147.3
C 14 254 9252 58.82 583 589 147.3
C 12 2 6422 39.61 583 589 147.3
D 10 118 491152 3363.47 554 539 145.9
D 12 233 445127 3047.94 554 539 145.9
D 13 249 395703 2709.1 554 539 145.9

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