ASTROSAT CZTI

Data Quality Report

Orbit 43487

Creation date: 2024-06-27T22:52:33.643908
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_018T01_9000005874_43487cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43487cztM0_level2_quad_clean.evt
Size (bytes)367,171,20085,832,640
Size350.2 MB 81.9 MB
Events in quadrant A3,107,920585,414
Events in quadrant B2,738,492598,978
Events in quadrant C2,454,430575,211
Events in quadrant D4,899,059486,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125532
B0115752
C0104472
D0180612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032240.476948%
B5032460.914149%
C5032190.377583%
D503255511.029412%

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 6976 5033 17 17 0.24% 0.34%
B 6976 5033 35 35 0.50% 0.70%
C 6976 5033 18 18 0.26% 0.36%
D 6976 5033 577 577 8.27% 11.46%

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 612107 5478.51 548 538 111.6
A 15 222 254627 2276.16 548 538 111.6
A 15 237 99657 887.92 548 538 111.6
B 0 190 123894 1194.95 549 536 103.2
B 0 189 120622 1163.26 549 536 103.2
B 0 245 100256 965.97 549 536 103.2
C 15 214 207118 1640.86 545 549 125.9
C 3 233 59039 464.61 545 549 125.9
C 12 249 51038 401.05 545 549 125.9
D 1 52 1259065 9912.55 516 501 127.0
D 13 249 616857 4854.47 516 501 127.0
D 2 16 526091 4139.59 516 501 127.0

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