ASTROSAT CZTI

Data Quality Report

Orbit 20220627_A11_049T04_9000005210_level2

Creation date: 2022-06-29T17:11:35.035771
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/AS1A11_049T04_9000005210cztM0_level2_bc.evt modeM0/AS1A11_049T04_9000005210cztM0_level2_quad_clean.evt
Size (bytes)2,112,266,880660,516,480
Size2.0 GB 629.9 MB
Events in quadrant A11,287,3614,354,255
Events in quadrant B17,440,6634,180,407
Events in quadrant C12,309,6054,249,785
Events in quadrant D19,717,9493,981,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C01670
D01670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09640
B09640
C09640
D09640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0985090
B01266180
C01000800
D01328960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47209910.192760%
B4720927405.803978%
C472093170.671482%
D4720923645.007520%

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 63908 47219 9 9 0.01% 0.02%
B 63908 47209 188 188 0.29% 0.40%
C 63908 47209 38 38 0.06% 0.08%
D 63908 47211 524 524 0.82% 1.11%

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 1321410 2411.86 2478 2441 546.9
A 15 223 127115 227.98 2478 2441 546.9
A 13 6 104364 186.38 2478 2441 546.9
B 5 172 5527102 11576.46 2408 2360 477.2
B 5 255 1270694 2657.65 2408 2360 477.2
B 5 63 394216 821.09 2408 2360 477.2
C 15 214 1910554 3518.09 2376 2357 542.4
C 0 10 946649 1740.96 2376 2357 542.4
C 6 255 91679 164.68 2376 2357 542.4
D 12 227 3148325 5662.4 2374 2311 555.6
D 13 249 2056572 3697.39 2374 2311 555.6
D 2 250 1115991 2004.47 2374 2311 555.6

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