ASTROSAT CZTI

Data Quality Report

Orbit 28831

Creation date: 2024-06-27T19:56:55.134404
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_121T01_9000004134_28831cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28831cztM0_level2_quad_clean.evt
Size (bytes)593,216,640115,159,680
Size565.7 MB 109.8 MB
Events in quadrant A3,098,862790,696
Events in quadrant B3,394,127808,391
Events in quadrant C5,184,520754,513
Events in quadrant D5,850,996683,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134012
B0142402
C0200862
D0218292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454300.464828%
B64541081.673381%
C64543154.880694%
D645477912.070034%

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 7554 6454 0 0 0.00% 0.00%
B 7554 6454 31 31 0.41% 0.48%
C 7554 6454 24 24 0.32% 0.37%
D 7554 6454 606 606 8.02% 9.39%

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 13 254 13130 77.67 798 783 159.0
A 14 235 12323 72.59 798 783 159.0
A 3 137 7355 41.34 798 783 159.0
B 5 255 109497 732.6 797 778 148.4
B 5 172 34993 230.55 797 778 148.4
B 10 246 34220 225.35 797 778 148.4
C 3 233 1926056 10910.23 761 766 176.5
C 14 238 148421 836.73 761 766 176.5
C 4 254 88993 499.96 761 766 176.5
D 1 52 2453112 14294.85 721 701 171.6
D 8 195 510372 2970.82 721 701 171.6
D 2 250 64247 370.4 721 701 171.6

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