ASTROSAT CZTI

Data Quality Report

Orbit 23262

Creation date: 2024-06-27T18:52:01.004211
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/AS1A08_004T03_9000003438_23262cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23262cztM0_level2_quad_clean.evt
Size (bytes)460,730,88093,179,520
Size439.4 MB 88.9 MB
Events in quadrant A3,156,056606,623
Events in quadrant B3,268,680621,895
Events in quadrant C3,266,462583,845
Events in quadrant D3,830,702566,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133212
B0135143
C0135012
D0156292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347711.118639%
B6346891.402458%
C63461071.686101%
D63461532.410968%

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 7557 6348 0 0 0.00% 0.00%
B 7556 6346 0 0 0.00% 0.00%
C 7556 6347 1 1 0.01% 0.02%
D 7556 6346 84 84 1.11% 1.32%

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 10977 61.82 818 801 164.6
A 0 226 7063 38.04 818 801 164.6
A 3 137 6904 37.08 818 801 164.6
B 3 64 18800 116.95 820 802 153.9
B 12 111 17733 110.01 820 802 153.9
B 11 111 15833 97.67 820 802 153.9
C 14 238 125132 680.4 787 793 182.7
C 2 16 27751 147.52 787 793 182.7
C 0 207 20111 105.71 787 793 182.7
D 7 238 208406 1076.7 795 775 192.8
D 1 239 141995 732.32 795 775 192.8
D 2 120 131815 679.53 795 775 192.8

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