ASTROSAT CZTI

Data Quality Report

Orbit 16932

Creation date: 2024-06-27T17:29:39.757721
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_013T01_9000002514_16932cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16932cztM0_level2_quad_clean.evt
Size (bytes)549,342,720104,780,160
Size523.9 MB 99.9 MB
Events in quadrant A4,381,471684,919
Events in quadrant B3,107,581711,868
Events in quadrant C4,045,858672,066
Events in quadrant D4,659,233648,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173512
B0135802
C0165122
D0186002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65382073.166106%
B6538230.351790%
C6538781.193025%
D65382083.181401%

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 7694 6540 143 143 1.86% 2.19%
B 7694 6540 0 0 0.00% 0.00%
C 7694 6540 2 2 0.03% 0.03%
D 7694 6540 141 141 1.83% 2.16%

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 1398851 8940.89 771 755 156.4
A 0 8 10148 60.07 771 755 156.4
A 0 23 8611 50.24 771 755 156.4
B 15 35 22765 150.42 780 762 146.3
B 12 111 17435 113.98 780 762 146.3
B 11 111 14950 96.99 780 762 146.3
C 3 233 996278 5817.01 742 747 171.1
C 14 238 116569 676.76 742 747 171.1
C 14 225 37173 212.84 742 747 171.1
D 1 52 1822401 10220.66 734 710 178.2
D 2 152 27331 149.36 734 710 178.2
D 2 234 25027 136.43 734 710 178.2

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