ASTROSAT CZTI

Data Quality Report

Orbit 22274

Creation date: 2024-06-27T18:38:50.996793
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/AS1A07_018T08_9000003296_22274cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22274cztM0_level2_quad_clean.evt
Size (bytes)457,845,12079,087,680
Size436.6 MB 75.4 MB
Events in quadrant A3,269,236494,047
Events in quadrant B3,418,628509,820
Events in quadrant C3,349,764473,829
Events in quadrant D3,383,246460,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137142
B0141842
C0140122
D0143002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6555190.289855%
B6555490.747521%
C6555640.976354%
D6555210.320366%

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 7785 6556 0 0 0.00% 0.00%
B 7785 6556 10 10 0.13% 0.15%
C 7785 6556 4 4 0.05% 0.06%
D 7785 6556 4 4 0.05% 0.06%

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 9407 50.59 849 833 169.5
A 0 226 7319 38.27 849 833 169.5
A 3 137 7122 37.11 849 833 169.5
B 4 171 58921 365.05 852 833 159.1
B 3 64 24677 149.84 852 833 159.1
B 12 111 19192 115.37 852 833 159.1
C 14 238 130575 683.96 816 823 189.7
C 10 22 32760 168.35 816 823 189.7
C 13 61 5617 25.27 816 823 189.7
D 1 52 177913 898.99 819 797 197.0
D 2 136 43650 217.51 819 797 197.0
D 2 234 25008 122.89 819 797 197.0

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