ASTROSAT CZTI

Data Quality Report

Orbit 11341

Creation date: 2024-06-27T16:11:33.352767
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_062T01_9000001660_11341cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11341cztM0_level2_quad_clean.evt
Size (bytes)1,107,915,840161,550,720
Size1.0 GB 154.1 MB
Events in quadrant A7,713,3311,024,264
Events in quadrant B9,063,166997,906
Events in quadrant C5,725,6191,028,949
Events in quadrant D10,182,296951,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311994
B0353053
C0261433
D0389443

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128673452.681278%
B128679157.111215%
C12867940.730551%
D1286811398.851414%

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 14117 12869 112 112 0.79% 0.87%
B 14117 12869 534 534 3.78% 4.15%
C 14117 12869 0 0 0.00% 0.00%
D 14118 12870 885 885 6.27% 6.88%

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 13 251 1778347 5820.96 1499 1465 305.3
A 1 162 56017 178.71 1499 1465 305.3
A 1 178 33473 104.86 1499 1465 305.3
B 4 239 2468211 8712.5 1474 1433 283.1
B 4 81 363326 1278.18 1474 1433 283.1
B 3 64 348873 1227.13 1474 1433 283.1
C 13 61 10801 27.43 1463 1468 340.2
C 13 250 10466 26.45 1463 1468 340.2
C 14 234 10041 25.2 1463 1468 340.2
D 10 253 1191507 3527.17 1403 1366 337.4
D 2 14 1097951 3249.9 1403 1366 337.4
D 1 52 858418 2540.01 1403 1366 337.4

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