ASTROSAT CZTI

Data Quality Report

Orbit 08871

Creation date: 2024-06-27T15:38:27.626155
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/AS1G07_046T01_9000001236_08871cztM0_level2.evt modeM0/AS1G07_046T01_9000001236_08871cztM0_level2_quad_clean.evt
Size (bytes)597,689,28060,059,520
Size570.0 MB 57.3 MB
Events in quadrant A3,470,819356,801
Events in quadrant B7,647,504339,776
Events in quadrant C3,027,356352,295
Events in quadrant D3,541,045341,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140842
B0270011
C0126561
D0141421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6126881.436500%
B612680013.059092%
C6126560.914136%
D61261031.681358%

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 7376 6126 0 0 0.00% 0.00%
B 7375 6125 485 485 6.58% 7.92%
C 7376 6126 0 0 0.00% 0.00%
D 7376 6126 40 40 0.54% 0.65%

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 334526 2043.12 808 793 163.3
A 13 248 11962 68.38 808 793 163.3
A 0 226 7812 42.97 808 793 163.3
B 7 202 3603056 25169.55 759 745 143.1
B 4 48 1073806 7497.54 759 745 143.1
B 0 214 15906 105.93 759 745 143.1
C 13 61 5887 28.51 775 780 179.1
C 9 54 4598 21.31 775 780 179.1
C 3 202 1872 6.09 775 780 179.1
D 8 195 363444 1910.41 778 759 189.8
D 1 52 80567 420.38 778 759 189.8
D 7 71 67575 351.94 778 759 189.8

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