ASTROSAT CZTI

Data Quality Report

Orbit 12618

Creation date: 2024-06-27T16:30:03.002714
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/AS1G08_071T01_9000001874_12618cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12618cztM0_level2_quad_clean.evt
Size (bytes)500,209,92068,688,000
Size477.0 MB 65.5 MB
Events in quadrant A3,294,546409,914
Events in quadrant B3,895,913410,954
Events in quadrant C3,275,612411,600
Events in quadrant D4,242,832395,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140612
B0160121
C0139881
D0170691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481751.157229%
B64812433.749421%
C6481781.203518%
D64812293.533405%

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 7573 6482 3 3 0.04% 0.05%
B 7573 6482 130 130 1.72% 2.01%
C 7573 6482 45 45 0.59% 0.69%
D 7573 6482 138 138 1.82% 2.13%

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 3 1 179070 1081.61 802 783 164.8
A 12 189 28617 168.86 802 783 164.8
A 0 226 7156 38.66 802 783 164.8
B 4 239 538535 3568.98 793 773 150.7
B 3 64 91782 604.0 793 773 150.7
B 11 51 38425 249.88 793 773 150.7
C 15 208 215300 1187.41 780 784 180.7
C 14 234 20662 110.03 780 784 180.7
C 13 61 5752 27.5 780 784 180.7
D 10 157 708873 3854.33 765 745 183.7
D 1 52 545994 2967.78 765 745 183.7
D 13 249 42670 228.2 765 745 183.7

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