ASTROSAT CZTI

Data Quality Report

Orbit 20220428_A10_065T04_9000005098_level2

Creation date: 2022-05-10T20:01:53.439484
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/AS1A10_065T04_9000005098cztM0_level2_bc.evt modeM0/AS1A10_065T04_9000005098cztM0_level2_quad_clean.evt
Size (bytes)5,974,568,6401,488,407,040
Size5.6 GB 1.4 GB
Events in quadrant A31,794,4349,515,823
Events in quadrant B40,462,7579,465,996
Events in quadrant C38,249,5729,436,424
Events in quadrant D62,154,7188,314,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04570
B04570
C04570
D04570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02692040
B03130030
C02826180
D03999110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024960
B025000
C025000
D024970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12173419611.610889%
B12175961325.036178%
C12175726552.180573%
D1216181551812.759624%

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 167448 121913 240 240 0.14% 0.20%
B 167448 121925 481 481 0.29% 0.39%
C 167448 121919 449 449 0.27% 0.37%
D 167448 121743 3018 3018 1.80% 2.48%

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 15 169 5027914 3713.22 6146 6039 1352.4
A 10 83 2382140 1756.91 6146 6039 1352.4
A 13 6 227794 163.97 6146 6039 1352.4
B 5 172 14006093 11754.34 6120 5987 1191.1
B 4 81 713982 594.42 6120 5987 1191.1
B 15 85 447063 370.32 6120 5987 1191.1
C 0 10 6548837 4743.18 6038 5976 1379.4
C 15 214 4698661 3401.92 6038 5976 1379.4
C 1 23 1239121 893.96 6038 5976 1379.4
D 7 80 25215936 18272.28 5706 5517 1379.7
D 13 249 2415568 1746.78 5706 5517 1379.7
D 12 227 1885915 1362.89 5706 5517 1379.7

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