ASTROSAT CZTI

Data Quality Report

Orbit 10874

Creation date: 2024-06-27T16:05:02.863345
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_130T01_9000001572_10874cztM0_level2.evt modeM0/AS1A04_130T01_9000001572_10874cztM0_level2_quad_clean.evt
Size (bytes)375,151,68055,275,840
Size357.8 MB 52.7 MB
Events in quadrant A3,022,799329,006
Events in quadrant B2,990,116350,987
Events in quadrant C2,280,535380,026
Events in quadrant D2,753,734290,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082
B084
C084
D084

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016264
B016254
C016252
D016270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02290110967
B02261610655
C0161695880
D02737616287

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44082415.467332%
B45592746.010090%
C4969220.442745%
D42512626.163256%

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 8685 5951 102 102 1.17% 1.71%
B 8686 6047 60 60 0.69% 0.99%
C 8686 6544 0 0 0.00% 0.00%
D 8686 5535 202 202 2.33% 3.65%

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 8 5 644052 5974.89 519 508 107.7
A 15 223 196348 1818.25 519 508 107.7
A 5 112 67594 622.85 519 508 107.7
B 4 239 843781 7981.67 541 527 105.6
B 0 214 15071 137.66 541 527 105.6
B 12 111 11402 102.94 541 527 105.6
C 13 61 4282 26.65 584 587 138.7
C 8 222 1654 7.69 584 587 138.7
C 3 202 1484 6.47 584 587 138.7
D 1 52 734389 6172.83 481 467 118.9
D 8 195 108363 907.49 481 467 118.9
D 13 104 33669 279.25 481 467 118.9

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