ASTROSAT CZTI

Data Quality Report

Orbit 20210722_T04_029T01_9000004582_level2

Creation date: 2021-07-26T15:17:45.122007
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_029T01_9000004582cztM0_level2_bc.evt modeM0/AS1T04_029T01_9000004582cztM0_level2_quad_clean.evt
Size (bytes)6,235,551,3601,681,200,000
Size5.8 GB 1.6 GB
Events in quadrant A28,697,88010,807,324
Events in quadrant B74,333,54610,605,529
Events in quadrant C34,819,04410,233,676
Events in quadrant D41,846,98710,050,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027260
B027300
C027420
D027400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02210
B02210
C02210
D02210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02798950
B04313110
C03112920
D03186720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13475418471.370646%
B13434270195.224725%
C13472052173.872476%
D13469924281.802538%

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 161551 135374 0 0 0.00% 0.00%
B 161551 134854 1316 1316 0.81% 0.98%
C 161551 135353 40 40 0.02% 0.03%
D 161551 135317 156 156 0.10% 0.12%

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 215365 131.55 7438 7327 1581.4
A 0 226 46599 24.83 7438 7327 1581.4
A 12 194 42652 22.34 7438 7327 1581.4
B 6 159 37270670 26911.11 7381 7210 1384.7
B 12 1 7377657 5322.83 7381 7210 1384.7
B 0 190 727637 520.28 7381 7210 1384.7
C 3 233 2770728 1661.35 7072 7058 1663.5
C 0 10 2170304 1300.41 7072 7058 1663.5
C 10 22 2071836 1241.22 7072 7058 1663.5
D 8 195 11159677 6834.24 7217 6998 1631.9
D 12 218 1539784 939.28 7217 6998 1631.9
D 2 250 500426 302.37 7217 6998 1631.9

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