ASTROSAT CZTI

Data Quality Report

Orbit 41726

Creation date: 2024-06-27T22:32:07.119535
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_070T01_9000005694_41726cztM0_level2.fits modeM0/AS1A12_070T01_9000005694_41726cztM0_level2_quad_clean.evt
Size (bytes)339,517,44094,605,120
Size323.8 MB 90.2 MB
Events in quadrant A3,127,685634,497
Events in quadrant B2,741,948639,288
Events in quadrant C3,157,181605,547
Events in quadrant D3,079,722571,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131232
B0126802
C0133582
D0137402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5918220.371747%
B5918560.946266%
C59181983.345725%
D59181061.791146%

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 7231 5919 7 7 0.10% 0.12%
B 7231 5919 23 23 0.32% 0.39%
C 7231 5919 195 195 2.70% 3.29%
D 7231 5919 94 94 1.30% 1.59%

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 591255 4565.25 626 614 129.4
A 13 248 54118 413.55 626 614 129.4
A 7 3 34824 264.42 626 614 129.4
B 0 186 113050 926.52 621 604 121.4
B 0 190 76568 625.92 621 604 121.4
B 5 255 54967 447.94 621 604 121.4
C 0 10 527706 3767.6 599 602 139.9
C 15 214 236057 1682.97 599 602 139.9
C 15 159 27196 190.09 599 602 139.9
D 13 249 234872 1565.02 608 592 149.7
D 2 249 195532 1302.23 608 592 149.7
D 10 199 109591 728.13 608 592 149.7

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