ASTROSAT CZTI

Data Quality Report

Orbit 36356

Creation date: 2022-06-19T14:36:09.547382
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_097T17_9000005194_36356cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36356cztM0_level2_quad_clean.evt
Size (bytes)1,331,236,800186,310,080
Size1.2 GB 177.7 MB
Events in quadrant A7,889,1301,163,926
Events in quadrant B11,183,1981,131,648
Events in quadrant C8,809,1291,165,632
Events in quadrant D11,352,7781,074,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335835
B0437294
C0358674
D0446094

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16026350.218395%
B1602611457.144640%
C160263562.221390%
D160269796.108823%

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 21517 16031 15 15 0.07% 0.09%
B 21517 16031 895 895 4.16% 5.58%
C 21517 16031 353 353 1.64% 2.20%
D 21517 16031 982 982 4.56% 6.13%

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 10 83 453645 1235.13 1820 1785 365.8
A 9 143 192247 520.62 1820 1785 365.8
A 12 189 178566 483.22 1820 1785 365.8
B 5 172 2255989 6647.62 1762 1715 339.1
B 5 236 1575301 4640.34 1762 1715 339.1
B 4 171 111217 322.91 1762 1715 339.1
C 0 207 957324 2338.82 1764 1778 408.6
C 15 214 667904 1630.42 1764 1778 408.6
C 0 10 317325 772.34 1764 1778 408.6
D 12 6 1537603 3645.24 1733 1685 421.3
D 2 250 998435 2365.62 1733 1685 421.3
D 2 249 724452 1715.36 1733 1685 421.3

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