ASTROSAT CZTI

Data Quality Report

Orbit 19415

Creation date: 2024-06-27T18:02:39.764180
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/AS1A06_009T02_9000002882_19415cztM0_level2.evt modeM0/AS1A06_009T02_9000002882_19415cztM0_level2_quad_clean.evt
Size (bytes)625,011,84095,929,920
Size596.1 MB 91.5 MB
Events in quadrant A3,709,045608,278
Events in quadrant B4,138,698616,230
Events in quadrant C3,888,375589,552
Events in quadrant D6,676,788561,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159482
B0170892
C0163562
D0249452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76131031.352949%
B76142072.718676%
C76141662.180194%
D76146198.129761%

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 8818 7613 1 1 0.01% 0.01%
B 8819 7614 15 15 0.17% 0.20%
C 8819 7615 1 1 0.01% 0.01%
D 8819 7616 542 542 6.15% 7.12%

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 21632 106.81 954 931 193.8
A 13 254 11887 56.53 954 931 193.8
A 11 29 8612 39.63 954 931 193.8
B 4 174 235288 1286.27 949 922 182.2
B 7 220 119981 653.43 949 922 182.2
B 0 190 22258 117.1 949 922 182.2
C 3 233 163376 763.24 911 917 212.9
C 14 238 142325 664.34 911 917 212.9
C 0 207 14031 61.61 911 917 212.9
D 7 238 3210054 14724.56 902 877 217.9
D 2 234 31632 141.11 902 877 217.9
D 8 195 22648 99.89 902 877 217.9

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