ASTROSAT CZTI

Data Quality Report

Orbit 39938

Creation date: 2024-06-27T22:10:20.747971
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/AS1A12_044T21_9000005512_39938cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39938cztM0_level2_quad_clean.evt
Size (bytes)279,288,00071,239,680
Size266.3 MB 67.9 MB
Events in quadrant A2,226,495493,740
Events in quadrant B2,309,949501,183
Events in quadrant C2,308,387469,986
Events in quadrant D3,178,564408,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0833
B0842
C0842
D0842

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08994180
B09673277
C09537371
D012763630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A404190.222717%
B4036611.511397%
C4031120.297693%
D40263488.643815%

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 6143 4077 4 4 0.07% 0.10%
B 6133 4073 28 28 0.46% 0.69%
C 6106 4061 5 5 0.08% 0.12%
D 6102 4050 335 335 5.49% 8.27%

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 325633 3308.2 480 472 98.3
A 15 223 12938 126.83 480 472 98.3
A 13 248 10426 101.27 480 472 98.3
B 4 170 228348 2503.62 471 460 91.0
B 0 183 99735 1090.65 471 460 91.0
B 5 255 66769 728.48 471 460 91.0
C 9 54 337377 3132.97 458 462 107.5
C 15 214 166867 1547.4 458 462 107.5
C 0 10 7706 67.36 458 462 107.5
D 12 227 782599 7135.39 442 429 109.6
D 2 250 253192 2305.85 442 429 109.6
D 9 49 112309 1020.63 442 429 109.6

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