ASTROSAT CZTI

Data Quality Report

Orbit 41708

Creation date: 2024-06-27T22:31:52.613229
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/AS1A12_077T12_9000005692_41708cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41708cztM0_level2_quad_clean.evt
Size (bytes)306,483,84087,514,560
Size292.3 MB 83.5 MB
Events in quadrant A2,823,747598,384
Events in quadrant B2,497,329605,841
Events in quadrant C2,790,423561,446
Events in quadrant D2,843,563533,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114272
B0107672
C0113542
D0119052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5001130.259948%
B5001320.639872%
C50011683.359328%
D5001921.839632%

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 7123 5002 6 6 0.08% 0.12%
B 7123 5002 24 24 0.34% 0.48%
C 7123 5002 163 163 2.29% 3.26%
D 7123 5002 89 89 1.25% 1.78%

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 521895 4429.74 570 559 117.7
A 15 223 80571 679.85 570 559 117.7
A 2 79 9150 73.0 570 559 117.7
B 5 255 219463 2020.4 562 548 108.4
B 4 141 38317 348.58 562 548 108.4
B 0 190 20692 185.91 562 548 108.4
C 0 10 459362 3609.24 544 549 127.1
C 15 214 203192 1594.08 544 549 127.1
C 14 254 5127 36.01 544 549 127.1
D 2 249 488348 3644.55 554 540 133.8
D 13 249 159427 1187.09 554 540 133.8
D 2 234 25178 184.08 554 540 133.8

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