ASTROSAT CZTI

Data Quality Report

Orbit 16978

Creation date: 2024-06-27T17:30:37.482904
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/AS1T03_058T01_9000002522_16978cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16978cztM0_level2_quad_clean.evt
Size (bytes)487,264,32097,024,320
Size464.7 MB 92.5 MB
Events in quadrant A3,043,975645,651
Events in quadrant B3,255,847658,004
Events in quadrant C3,467,301635,790
Events in quadrant D4,606,017603,072

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125151
B0130071
C0142151
D0172901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566250.088308%
B5663611.077168%
C5663671.183118%
D56634037.116369%

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 7048 5664 0 0 0.00% 0.00%
B 7049 5665 11 11 0.16% 0.19%
C 7049 5665 2 2 0.03% 0.04%
D 7049 5665 289 289 4.10% 5.10%

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 15 174 204612 1398.19 738 724 145.8
A 0 226 6516 39.72 738 724 145.8
A 12 194 5511 32.83 738 724 145.8
B 3 64 177552 1315.17 741 726 134.5
B 7 220 79668 587.15 741 726 134.5
B 0 189 33667 245.0 741 726 134.5
C 3 233 507141 3066.78 723 729 165.1
C 14 238 114838 691.03 723 729 165.1
C 0 207 12907 73.75 723 729 165.1
D 1 52 1662004 9840.88 708 689 168.8
D 7 38 247818 1463.88 708 689 168.8
D 2 234 22076 126.69 708 689 168.8

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