ASTROSAT CZTI

Data Quality Report

Orbit 30979

Creation date: 2024-06-27T20:21:52.326941
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/AS1A10_071T42_9000004476_30979cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30979cztM0_level2_quad_clean.evt
Size (bytes)553,783,68077,077,440
Size528.1 MB 73.5 MB
Events in quadrant A3,310,515483,387
Events in quadrant B5,354,300483,749
Events in quadrant C3,831,180453,603
Events in quadrant D3,823,852448,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137962
B0204222
C0153892
D0157232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6658310.465605%
B66591422.132452%
C66591792.688091%
D6659370.555639%

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 8959 6661 0 0 0.00% 0.00%
B 8960 6662 10 10 0.11% 0.15%
C 8960 6662 62 62 0.69% 0.93%
D 8960 6662 21 21 0.23% 0.32%

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 12041 65.36 856 839 171.4
A 3 137 8382 44.01 856 839 171.4
A 15 192 8147 42.64 856 839 171.4
B 6 159 1897151 11668.79 851 830 162.5
B 4 80 39433 237.54 851 830 162.5
B 0 190 28552 170.58 851 830 162.5
C 0 10 503795 2624.93 811 818 191.6
C 14 238 131942 684.31 811 818 191.6
C 2 114 15331 75.74 811 818 191.6
D 8 195 454336 2316.54 815 791 195.8
D 1 52 120760 612.76 815 791 195.8
D 2 250 113404 575.18 815 791 195.8

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