ASTROSAT CZTI

Data Quality Report

Orbit 13181

Creation date: 2024-06-27T16:37:18.583601
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/AS1G08_034T01_9000001944_13181cztM0_level2.evt modeM0/AS1G08_034T01_9000001944_13181cztM0_level2_quad_clean.evt
Size (bytes)1,505,459,520241,539,840
Size1.4 GB 230.4 MB
Events in quadrant A10,914,1241,467,502
Events in quadrant B12,035,3051,497,475
Events in quadrant C9,318,2681,506,488
Events in quadrant D11,919,0941,410,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460164
B0494774
C0425594
D0496594

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208046883.307056%
B2080410825.200923%
C208043361.615074%
D208047833.763699%

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 21531 20810 143 143 0.66% 0.69%
B 21531 20810 401 401 1.86% 1.93%
C 21531 20810 1 1 0.00% 0.00%
D 21531 20810 285 285 1.32% 1.37%

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 12 189 761659 1535.22 2426 2369 494.6
A 0 23 300068 601.92 2426 2369 494.6
A 12 173 178401 355.92 2426 2369 494.6
B 4 239 1910368 4171.6 2405 2344 457.4
B 3 64 193791 418.57 2405 2344 457.4
B 0 230 134385 288.69 2405 2344 457.4
C 15 208 36948 63.02 2371 2376 548.6
C 8 128 22768 37.17 2371 2376 548.6
C 13 61 17344 27.28 2371 2376 548.6
D 1 52 2176542 3856.6 2337 2270 563.8
D 10 157 333579 587.66 2337 2270 563.8
D 13 122 181554 318.0 2337 2270 563.8

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