ASTROSAT CZTI

Data Quality Report

Orbit 41041

Creation date: 2024-06-27T22:23:36.452687
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_029T02_9000005590_41041cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41041cztM0_level2_quad_clean.evt
Size (bytes)237,928,32074,082,240
Size226.9 MB 70.7 MB
Events in quadrant A2,250,442498,825
Events in quadrant B1,895,130515,258
Events in quadrant C2,310,174483,391
Events in quadrant D2,024,136450,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0999
B0954
C09610
D09511

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106791470
B094931058
C0105791255
D0100761182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374
B0364
C0364
D0366

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4181100.239177%
B419720.047653%
C4163641.537353%
D4182230.549976%

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 7012 4439 3 3 0.04% 0.07%
B 7013 4445 0 0 0.00% 0.00%
C 7013 4432 48 48 0.68% 1.08%
D 7013 4439 18 18 0.26% 0.41%

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 388097 3954.18 479 469 98.0
A 13 254 7034 66.97 479 469 98.0
A 13 6 6053 56.96 479 469 98.0
B 12 111 11531 117.53 481 468 94.1
B 11 111 10436 105.89 481 468 94.1
B 14 111 10210 103.49 481 468 94.1
C 14 254 213911 1940.51 470 474 110.0
C 15 214 175844 1594.41 470 474 110.0
C 0 10 68012 614.04 470 474 110.0
D 13 249 61829 527.13 473 460 116.4
D 12 0 56936 485.1 473 460 116.4
D 13 171 43730 371.67 473 460 116.4

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