ASTROSAT CZTI

Data Quality Report

Orbit 40451

Creation date: 2024-06-27T22:16:16.484021
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_022T01_9000005540_40451cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40451cztM0_level2_quad_clean.evt
Size (bytes)328,101,12091,609,920
Size312.9 MB 87.4 MB
Events in quadrant A2,913,965624,309
Events in quadrant B2,647,661638,727
Events in quadrant C2,733,686616,018
Events in quadrant D3,401,030493,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123873
B0118202
C0119402
D0141472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748150.260960%
B5748180.313152%
C5748170.295755%
D574889615.588031%

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 7091 5749 6 6 0.08% 0.10%
B 7091 5749 5 5 0.07% 0.09%
C 7091 5749 11 11 0.16% 0.19%
D 7091 5749 152 152 2.14% 2.64%

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 503061 4040.2 610 597 124.4
A 7 3 20091 156.75 610 597 124.4
A 12 189 15018 115.96 610 597 124.4
B 3 112 124452 1051.36 607 591 117.8
B 4 171 93673 790.1 607 591 117.8
B 0 230 34474 287.61 607 591 117.8
C 15 214 246829 1760.41 599 604 139.9
C 14 254 93258 662.44 599 604 139.9
C 10 20 44304 312.44 599 604 139.9
D 12 227 838661 6273.47 546 532 133.6
D 12 191 195005 1455.65 546 532 133.6
D 2 250 71708 532.76 546 532 133.6

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