ASTROSAT CZTI

Data Quality Report

Orbit 06659

Creation date: 2024-06-27T15:09:58.747527
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/AS1A02_103T01_9000000904_06659cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06659cztM0_level2_quad_clean.evt
Size (bytes)490,944,96097,444,800
Size468.2 MB 92.9 MB
Events in quadrant A3,131,313628,922
Events in quadrant B3,236,082647,138
Events in quadrant C3,064,212630,168
Events in quadrant D4,986,573582,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137843
B0141222
C0137702
D0193792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632270.407117%
B6632520.784077%
C6632240.361882%
D66323945.940893%

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 7862 6633 1 1 0.01% 0.02%
B 7862 6633 3 3 0.04% 0.05%
C 7862 6633 1 1 0.01% 0.02%
D 7862 6633 215 215 2.73% 3.24%

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 8 15 83131 514.94 787 770 159.9
A 14 111 8931 51.02 787 770 159.9
A 0 226 7569 42.51 787 770 159.9
B 4 81 39905 256.13 802 786 152.7
B 0 228 25325 160.66 802 786 152.7
B 12 111 15368 95.47 802 786 152.7
C 9 247 36383 198.47 769 776 179.4
C 4 254 26112 141.22 769 776 179.4
C 13 61 6094 29.64 769 776 179.4
D 8 195 1048331 5747.53 741 719 182.3
D 2 33 720697 3950.03 741 719 182.3
D 2 152 250932 1372.75 741 719 182.3

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