ASTROSAT CZTI

Data Quality Report

Orbit 48618

Creation date: 2024-09-24T01:50:23.536717
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/AS1A13_037T01_9000006436_48618cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48618cztM0_level2_quad_clean.evt
Size (bytes)473,353,920103,651,200
Size451.4 MB 98.8 MB
Events in quadrant A7,154,046668,169
Events in quadrant B3,087,530719,547
Events in quadrant C2,856,051701,587
Events in quadrant D3,914,407591,401

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254882
B0140292
C0135582
D0165542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65674186.365159%
B65671161.766408%
C6567290.441602%
D65674026.121517%

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 7637 6568 170 170 2.23% 2.59%
B 7637 6568 47 47 0.62% 0.72%
C 7637 6568 14 14 0.18% 0.21%
D 7637 6568 353 353 4.62% 5.37%

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 10 83 4128306 28254.78 695 681 146.1
A 13 248 303932 2075.84 695 681 146.1
A 12 189 26249 175.02 695 681 146.1
B 12 16 174132 1251.76 707 685 138.6
B 15 85 53510 381.24 707 685 138.6
B 12 111 17680 122.65 707 685 138.6
C 12 2 98532 589.21 704 705 166.0
C 14 254 7368 40.13 704 705 166.0
C 13 61 4698 24.05 704 705 166.0
D 2 165 1194846 7182.11 667 647 166.3
D 2 249 72933 434.74 667 647 166.3
D 2 234 33197 195.76 667 647 166.3

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