ASTROSAT CZTI

Data Quality Report

Orbit 33712

Creation date: 2024-06-27T20:52:07.478674
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/AS1T04_088T01_9000004814_33712cztM0_level2.evt modeM0/AS1T04_088T01_9000004814_33712cztM0_level2_quad_clean.evt
Size (bytes)488,764,80065,344,320
Size466.1 MB 62.3 MB
Events in quadrant A2,913,725409,336
Events in quadrant B3,746,257402,128
Events in quadrant C3,139,753418,918
Events in quadrant D4,662,747396,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119243
B0144662
C0125512
D0173102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5019761.514246%
B50193146.256226%
C5019891.773262%
D50191723.426977%

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 7082 5020 53 53 0.75% 1.06%
B 7082 5020 229 229 3.23% 4.56%
C 7082 5020 62 62 0.88% 1.24%
D 7082 5020 132 132 1.86% 2.63%

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 15 237 299618 2317.53 658 648 129.0
A 14 4 56176 430.43 658 648 129.0
A 13 6 9657 69.83 658 648 129.0
B 5 172 952280 7998.86 646 632 119.0
B 5 255 66007 549.49 646 632 119.0
B 0 219 52681 437.49 646 632 119.0
C 15 214 233191 1587.35 649 659 146.5
C 0 10 220446 1500.34 649 659 146.5
C 14 67 57099 385.28 649 659 146.5
D 1 52 966817 5789.43 643 633 166.9
D 8 195 540803 3236.73 643 633 166.9
D 13 249 163255 974.44 643 633 166.9

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