ASTROSAT CZTI

Data Quality Report

Orbit 00174

Creation date: 2024-06-27T13:57:24.278473
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/AS1P01_134T02_9000000010_00174cztM0_level2.evt modeM0/AS1P01_134T02_9000000010_00174cztM0_level2_quad_clean.evt
Size (bytes)2,899,379,520153,057,600
Size2.7 GB 146.0 MB
Events in quadrant A18,407,193960,495
Events in quadrant B29,636,925759,632
Events in quadrant C17,208,322982,996
Events in quadrant D21,559,175885,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0654395
B0994764
C0619094
D0749294

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15154240.158374%
B15154456130.097664%
C15154260.171572%
D1515411517.595354%

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 19927 15156 508 508 2.55% 3.35%
B 19926 15156 5869 5869 29.45% 38.72%
C 19926 15157 290 290 1.46% 1.91%
D 19926 15157 2305 2305 11.57% 15.21%

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 14 10 169953 165.78 4644 4610 997.4
A 14 171 115346 111.03 4644 4610 997.4
A 0 96 32169 27.63 4644 4610 997.4
B 8 233 8801145 10294.7 3683 3704 854.6
B 5 216 6101867 7136.02 3683 3704 854.6
B 10 199 479836 557.17 3683 3704 854.6
C 0 202 143083 116.74 4268 4425 1187.8
C 12 48 112021 90.58 4268 4425 1187.8
C 8 31 39605 29.62 4268 4425 1187.8
D 2 121 2225798 1815.0 4075 4204 1224.0
D 13 89 2169347 1768.88 4075 4204 1224.0
D 12 14 363982 293.93 4075 4204 1224.0

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