ASTROSAT CZTI

Data Quality Report

Orbit 20264

Creation date: 2024-06-27T18:13:12.584186
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/AS1A05_175T01_9000003004_20264cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20264cztM0_level2_quad_clean.evt
Size (bytes)643,749,12067,409,280
Size613.9 MB 64.3 MB
Events in quadrant A8,319,785364,921
Events in quadrant B3,517,364430,757
Events in quadrant C3,367,764404,764
Events in quadrant D3,859,131394,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289992
B0141802
C0136362
D0153942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6383181628.450572%
B6383530.830331%
C6383570.892997%
D63831041.629328%

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 7753 6384 1265 1265 16.32% 19.82%
B 7753 6384 6 6 0.08% 0.09%
C 7753 6384 0 0 0.00% 0.00%
D 7753 6384 89 89 1.15% 1.39%

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 14 238 5198335 33552.38 780 766 154.9
A 4 2 91509 585.78 780 766 154.9
A 8 205 17425 107.54 780 766 154.9
B 7 220 72495 447.53 864 845 160.1
B 12 111 18620 111.02 864 845 160.1
B 11 111 16654 98.74 864 845 160.1
C 14 238 134725 708.26 820 828 189.0
C 0 207 26501 135.8 820 828 189.0
C 3 233 6734 31.24 820 828 189.0
D 1 52 408405 2039.6 828 808 199.8
D 11 176 144596 719.51 828 808 199.8
D 7 238 77074 381.63 828 808 199.8

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