ASTROSAT CZTI

Data Quality Report

Orbit 03975

Creation date: 2024-06-27T14:35:52.494036
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/AS1G05_170T01_9000000510_03975cztM0_level2.evt modeM0/AS1G05_170T01_9000000510_03975cztM0_level2_quad_clean.evt
Size (bytes)298,751,04038,848,320
Size284.9 MB 37.0 MB
Events in quadrant A2,535,658234,990
Events in quadrant B2,664,822226,236
Events in quadrant C1,639,354231,757
Events in quadrant D1,959,217225,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101641
B0104531
C073901
D084081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363946112.668315%
B36393158.656224%
C3639230.632042%
D3639992.720528%

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 4439 3640 275 275 6.20% 7.55%
B 4439 3640 188 188 4.24% 5.16%
C 4439 3640 0 0 0.00% 0.00%
D 4439 3640 62 62 1.40% 1.70%

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 15 236 770229 9209.03 401 391 83.6
A 0 50 131977 1574.07 401 391 83.6
A 0 118 45254 536.66 401 391 83.6
B 14 167 850745 10487.81 411 403 81.1
B 4 81 72674 891.36 411 403 81.1
B 3 0 69609 853.56 411 403 81.1
C 8 128 13034 130.29 409 410 96.9
C 9 144 9610 94.95 409 410 96.9
C 10 65 7799 76.26 409 410 96.9
D 2 232 282532 2837.26 407 394 99.4
D 12 233 44848 447.04 407 394 99.4
D 2 63 34435 342.32 407 394 99.4

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