ASTROSAT CZTI

Data Quality Report

Orbit 27691

Creation date: 2024-06-27T19:43:11.160609
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_262T01_9000003988_27691cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27691cztM0_level2_quad_clean.evt
Size (bytes)522,264,96098,112,960
Size498.1 MB 93.6 MB
Events in quadrant A3,150,132658,786
Events in quadrant B3,417,824671,823
Events in quadrant C3,337,854641,906
Events in quadrant D5,492,509567,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131420
B0139660
C0136650
D0205000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171410.664398%
B6171771.247772%
C61711221.976989%
D61716039.771512%

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 7531 6172 5 5 0.07% 0.08%
B 7531 6171 0 0 0.00% 0.00%
C 7531 6171 16 16 0.21% 0.26%
D 7531 6172 395 395 5.24% 6.40%

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 8 192 14890 87.73 807 791 160.7
A 15 174 14691 86.49 807 791 160.7
A 13 254 10715 61.75 807 791 160.7
B 0 230 201272 1336.28 811 791 150.0
B 0 190 26179 169.22 811 791 150.0
B 12 111 17554 111.73 811 791 150.0
C 14 238 127278 694.53 788 794 182.1
C 8 208 76842 417.58 788 794 182.1
C 3 233 46707 252.11 788 794 182.1
D 1 52 1838362 10554.84 745 727 174.1
D 6 112 350669 2009.96 745 727 174.1
D 2 250 232773 1332.8 745 727 174.1

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