ASTROSAT CZTI

Data Quality Report

Orbit 35329

Creation date: 2022-04-11T06:37:13.572157
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_093T01_9000005064_35329cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35329cztM0_level2_quad_clean.evt
Size (bytes)521,133,12085,008,960
Size497.0 MB 81.1 MB
Events in quadrant A2,804,314544,423
Events in quadrant B6,041,890520,964
Events in quadrant C3,185,767567,056
Events in quadrant D3,357,584536,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122423
B0219652
C0129782
D0140512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5787370.639364%
B5787108818.800760%
C5787981.693451%
D5787701.209608%

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 8893 5789 28 28 0.31% 0.48%
B 8893 5788 755 755 8.49% 13.04%
C 8893 5789 78 78 0.88% 1.35%
D 8893 5789 58 58 0.65% 1.00%

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 98091 728.38 653 640 133.8
A 9 143 95790 711.18 653 640 133.8
A 8 192 33891 248.53 653 640 133.8
B 5 236 2459920 21097.74 607 590 116.6
B 5 172 1067044 9148.74 607 590 116.6
B 5 200 35432 298.9 607 590 116.6
C 0 10 411310 2776.67 640 644 147.9
C 15 214 238817 1610.38 640 644 147.9
C 15 159 20289 132.83 640 644 147.9
D 8 195 345467 2247.89 635 618 153.4
D 2 153 103335 669.56 635 618 153.4
D 1 47 99021 641.44 635 618 153.4

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