ASTROSAT CZTI

Data Quality Report

Orbit 20220427_A11_065T21_9000005094_level2

Creation date: 2022-04-29T16:58:17.549503
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_065T21_9000005094cztM0_level2_bc.evt modeM0/AS1A11_065T21_9000005094cztM0_level2_quad_clean.evt
Size (bytes)759,559,680232,064,640
Size724.4 MB 221.3 MB
Events in quadrant A3,639,5361,518,914
Events in quadrant B6,513,3781,465,593
Events in quadrant C4,966,2771,515,910
Events in quadrant D6,781,1941,416,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350940
B0469610
C0371690
D0448690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161083602.234914%
B16108170010.553762%
C161083101.924510%
D161088785.450708%

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 22289 16111 0 0 0.00% 0.00%
B 22289 16108 88 88 0.39% 0.55%
C 22289 16108 42 42 0.19% 0.26%
D 22289 16108 194 194 0.87% 1.20%

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 310882 1761.49 784 770 176.1
A 15 169 180168 1019.01 784 770 176.1
A 7 3 47700 266.57 784 770 176.1
B 5 172 3087077 20145.61 760 743 153.2
B 5 200 189417 1231.54 760 743 153.2
B 0 189 91657 593.43 760 743 153.2
C 0 10 936838 5170.55 775 767 181.0
C 15 214 622498 3434.24 775 767 181.0
C 9 187 262683 1446.74 775 767 181.0
D 7 80 950407 5077.01 771 748 187.1
D 8 195 596582 3185.41 771 748 187.1
D 10 118 321204 1713.2 771 748 187.1

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