ASTROSAT CZTI

Data Quality Report

Orbit 20306

Creation date: 2024-06-27T18:13:40.762551
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/AS1A05_174T01_9000003008_20306cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20306cztM0_level2_quad_clean.evt
Size (bytes)501,281,280109,134,720
Size478.1 MB 104.1 MB
Events in quadrant A3,207,795719,161
Events in quadrant B3,423,447746,233
Events in quadrant C3,286,732723,894
Events in quadrant D4,837,853678,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134162
B0142032
C0136192
D0184812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267160.255306%
B6267631.005266%
C6267500.797830%
D626766710.643051%

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 7557 6268 2 2 0.03% 0.03%
B 7557 6268 16 16 0.21% 0.26%
C 7557 6268 0 0 0.00% 0.00%
D 7557 6268 557 557 7.37% 8.89%

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 12 96 45644 275.75 813 797 162.6
A 11 29 12847 74.09 813 797 162.6
A 13 254 9192 51.62 813 797 162.6
B 7 220 152075 994.65 818 798 152.1
B 0 214 18672 117.52 818 798 152.1
B 12 111 17847 112.1 818 798 152.1
C 14 238 127374 673.47 807 815 187.9
C 3 233 12844 64.01 807 815 187.9
C 13 61 5621 25.57 807 815 187.9
D 1 52 1927242 10471.09 761 742 184.0
D 2 234 23424 123.28 761 742 184.0
D 2 120 17824 92.85 761 742 184.0

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