ASTROSAT CZTI

Data Quality Report

Orbit 06667

Creation date: 2024-06-27T15:10:04.642955
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/AS1A02_075T01_9000000906_06667cztM0_level2.evt modeM0/AS1A02_075T01_9000000906_06667cztM0_level2_quad_clean.evt
Size (bytes)225,835,20015,549,120
Size215.4 MB 14.8 MB
Events in quadrant A1,133,07581,634
Events in quadrant B1,157,26680,557
Events in quadrant C1,080,87677,953
Events in quadrant D3,304,97159,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048681
B049251
C047941
D0113851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2366220.929839%
B2366220.929839%
C2366110.464920%
D236695840.490279%

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 2366 2366 2 2 0.08% 0.08%
B 2366 2366 0 0 0.00% 0.00%
C 2366 2366 0 0 0.00% 0.00%
D 2366 2365 698 698 29.50% 29.51%

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 3 1 12586 202.49 287 279 60.8
A 14 111 12026 193.27 287 279 60.8
A 8 15 3424 51.74 287 279 60.8
B 0 214 14429 246.77 286 279 57.3
B 4 81 13975 238.85 286 279 57.3
B 15 204 5862 97.36 286 279 57.3
C 9 247 3016 41.82 276 277 65.5
C 13 61 2090 27.68 276 277 65.5
C 9 221 735 6.99 276 277 65.5
D 2 33 2375837 42659.7 223 216 55.7
D 2 152 24480 435.72 223 216 55.7
D 13 169 23080 410.58 223 216 55.7

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