ASTROSAT CZTI

Data Quality Report

Orbit 41546

Creation date: 2024-06-27T22:30:16.893737
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_035T02_9000005676_41546cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41546cztM0_level2_quad_clean.evt
Size (bytes)336,847,68090,915,840
Size321.2 MB 86.7 MB
Events in quadrant A2,731,110640,907
Events in quadrant B2,688,091646,958
Events in quadrant C2,817,738585,188
Events in quadrant D3,848,518535,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110472
B0110801
C0111961
D0146741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492290.182852%
B4923360.731261%
C49231503.046923%
D49233426.946984%

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 6956 4923 3 3 0.04% 0.06%
B 6957 4924 16 16 0.23% 0.32%
C 6957 4924 142 142 2.04% 2.88%
D 6957 4924 344 344 4.94% 6.99%

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 464047 3893.66 584 574 119.0
A 13 254 8547 66.98 584 574 119.0
A 3 137 6011 45.68 584 574 119.0
B 0 186 128701 1170.28 582 569 109.5
B 5 255 115183 1046.82 582 569 109.5
B 0 189 88242 800.75 582 569 109.5
C 0 10 376342 2934.36 554 558 128.1
C 15 214 215553 1678.82 554 558 128.1
C 14 254 52948 409.09 554 558 128.1
D 13 249 1163600 8714.01 550 534 133.5
D 5 222 259422 1939.66 550 534 133.5
D 1 47 149560 1116.54 550 534 133.5

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