ASTROSAT CZTI

Data Quality Report

Orbit 36274

Creation date: 2022-06-14T10:21:29.455281
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_071T35_9000005184_36274cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36274cztM0_level2_quad_clean.evt
Size (bytes)442,336,32071,043,840
Size421.8 MB 67.8 MB
Events in quadrant A2,645,847464,691
Events in quadrant B3,501,935462,938
Events in quadrant C2,850,136454,503
Events in quadrant D4,048,866408,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109943
B0137202
C0114162
D0154202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514370.136107%
B51432084.044332%
C5143861.672176%
D51434258.263659%

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 7116 5144 3 3 0.04% 0.06%
B 7116 5143 148 148 2.08% 2.88%
C 7116 5144 76 76 1.07% 1.48%
D 7116 5144 434 434 6.10% 8.44%

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 181653 1419.4 630 618 127.5
A 13 6 15825 119.23 630 618 127.5
A 13 254 9189 67.2 630 618 127.5
B 5 172 431562 3668.51 619 602 117.5
B 5 236 384944 3271.68 619 602 117.5
B 8 128 78883 666.36 619 602 117.5
C 0 10 257121 1814.34 609 613 141.4
C 15 214 214564 1513.32 609 613 141.4
C 13 61 4244 25.68 609 613 141.4
D 12 227 1229211 8578.54 589 573 143.2
D 12 6 219118 1525.92 589 573 143.2
D 2 153 100106 694.95 589 573 143.2

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