ASTROSAT CZTI

Data Quality Report

Orbit 11241

Creation date: 2024-06-27T16:10:12.267007
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/AS1T01_202T01_9000001640_11241cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11241cztM0_level2_quad_clean.evt
Size (bytes)319,348,80070,381,440
Size304.6 MB 67.1 MB
Events in quadrant A2,700,728471,365
Events in quadrant B2,166,640478,689
Events in quadrant C1,821,455486,368
Events in quadrant D2,736,085438,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104852
B088041
C076351
D0105921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36111895.234007%
B36111052.907782%
C3611371.024647%
D36112707.477153%

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 4566 3612 87 87 1.91% 2.41%
B 4566 3612 16 16 0.35% 0.44%
C 4566 3612 0 0 0.00% 0.00%
D 4566 3612 157 157 3.44% 4.35%

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 534009 5048.97 471 462 105.7
A 14 238 279457 2640.14 471 462 105.7
A 1 162 22652 209.98 471 462 105.7
B 4 239 166293 1703.08 475 465 97.4
B 11 51 61417 625.98 475 465 97.4
B 15 204 38117 386.69 475 465 97.4
C 13 61 3499 26.81 466 472 112.9
C 4 254 2344 16.58 466 472 112.9
C 12 4 2050 13.97 466 472 112.9
D 13 104 430653 3685.37 448 437 116.7
D 10 253 196877 1682.77 448 437 116.7
D 8 195 188708 1612.79 448 437 116.7

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