ASTROSAT CZTI

Data Quality Report

Orbit 33828

Creation date: 2024-06-27T20:53:08.230629
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_106T03_9000004826_33828cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33828cztM0_level2_quad_clean.evt
Size (bytes)524,134,08056,796,480
Size499.9 MB 54.2 MB
Events in quadrant A2,955,001350,523
Events in quadrant B3,922,381336,264
Events in quadrant C3,625,434337,700
Events in quadrant D5,014,420326,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119663
B0149972
C0144042
D0185922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A527180.151774%
B52713947.474862%
C52711172.219693%
D52712404.553216%

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 7304 5272 0 0 0.00% 0.00%
B 7304 5272 279 279 3.82% 5.29%
C 7304 5272 87 87 1.19% 1.65%
D 7304 5272 173 173 2.37% 3.28%

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 186881 1325.56 707 695 140.5
A 13 6 19897 136.71 707 695 140.5
A 10 83 11028 73.57 707 695 140.5
B 5 172 1069021 8472.68 672 657 126.1
B 5 255 46153 360.81 672 657 126.1
B 3 112 37461 291.87 672 657 126.1
C 14 254 365923 2377.7 676 683 153.6
C 15 214 229494 1489.55 676 683 153.6
C 0 10 200815 1302.85 676 683 153.6
D 8 195 1188021 7204.82 678 662 164.8
D 12 235 313176 1896.31 678 662 164.8
D 13 249 214467 1297.35 678 662 164.8

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