ASTROSAT CZTI

Data Quality Report

Orbit 15375

Creation date: 2024-06-27T17:07:31.709167
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/AS1A04_049T01_9000002266_15375cztM0_level2.evt modeM0/AS1A04_049T01_9000002266_15375cztM0_level2_quad_clean.evt
Size (bytes)567,267,84098,081,280
Size541.0 MB 93.5 MB
Events in quadrant A3,291,300629,962
Events in quadrant B3,505,277637,073
Events in quadrant C6,410,076611,895
Events in quadrant D3,501,924606,680

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146393
B0150422
C0239102
D0154782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6963280.402126%
B6963450.646273%
C69632463.532960%
D6963520.746805%

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 7569 6965 3 3 0.04% 0.04%
B 7569 6965 5 5 0.07% 0.07%
C 7569 6964 77 77 1.02% 1.11%
D 7569 6965 33 33 0.44% 0.47%

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 3 80 72530 430.68 819 802 166.5
A 9 143 24588 142.82 819 802 166.5
A 15 239 24434 141.9 819 802 166.5
B 8 3 99068 628.38 822 801 156.4
B 4 173 73184 462.86 822 801 156.4
B 10 245 47431 298.18 822 801 156.4
C 3 233 3302896 18202.75 794 798 181.4
C 5 96 7171 35.13 794 798 181.4
C 13 61 5539 26.13 794 798 181.4
D 1 255 136112 686.39 802 776 197.2
D 10 70 91113 458.17 802 776 197.2
D 2 33 73803 370.38 802 776 197.2

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