ASTROSAT CZTI

Data Quality Report

Orbit 11950

Creation date: 2024-06-27T16:20:26.835085
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/AS1A04_124T01_9000001766_11950cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11950cztM0_level2_quad_clean.evt
Size (bytes)1,698,802,560406,909,440
Size1.6 GB 388.1 MB
Events in quadrant A11,792,0422,752,501
Events in quadrant B14,897,0202,737,720
Events in quadrant C9,914,6012,695,403
Events in quadrant D13,291,5702,557,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500545
B0592294
C0464424
D0543124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229894221.835661%
B2298912105.263387%
C229891410.613337%
D229897413.223281%

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 25565 22990 78 78 0.31% 0.34%
B 25565 22990 777 777 3.04% 3.38%
C 25565 22990 0 0 0.00% 0.00%
D 25565 22990 559 559 2.19% 2.43%

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 11 29 366064 690.44 2616 2560 526.5
A 8 15 364834 688.1 2616 2560 526.5
A 1 162 362005 682.73 2616 2560 526.5
B 4 239 3868116 7900.17 2588 2527 489.3
B 15 204 515808 1049.0 2588 2527 489.3
B 5 255 95397 189.8 2588 2527 489.3
C 13 61 18389 27.36 2530 2535 579.4
C 1 16 17131 25.19 2530 2535 579.4
C 14 234 15450 22.29 2530 2535 579.4
D 8 195 1035074 1728.48 2493 2419 597.4
D 10 199 768408 1282.13 2493 2419 597.4
D 1 52 534507 890.62 2493 2419 597.4

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