ASTROSAT CZTI

Data Quality Report

Orbit 26766

Creation date: 2024-06-27T19:32:42.764816
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/AS1A09_145T01_9000003854_26766cztM0_level2.fits modeM0/AS1A09_145T01_9000003854_26766cztM0_level2_quad_clean.evt
Size (bytes)292,884,48068,630,400
Size279.3 MB 65.5 MB
Events in quadrant A1,874,654497,535
Events in quadrant B1,973,676502,048
Events in quadrant C2,042,860470,020
Events in quadrant D4,682,342365,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074581
B077341
C079842
D0163281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3432902.622378%
B34321363.962704%
C34311544.488487%
D343188325.735937%

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 4442 3433 0 0 0.00% 0.00%
B 4442 3433 42 42 0.95% 1.22%
C 4441 3432 50 50 1.13% 1.46%
D 4440 3431 574 574 12.93% 16.73%

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 0 13 50055 512.93 472 463 96.7
A 13 254 5521 52.31 472 463 96.7
A 3 137 4278 39.46 472 463 96.7
B 0 189 142345 1594.39 464 455 89.0
B 12 111 10412 111.89 464 455 89.0
B 11 111 9627 103.06 464 455 89.0
C 2 16 216317 2038.8 448 452 105.9
C 14 238 70772 664.15 448 452 105.9
C 10 22 6628 58.33 448 452 105.9
D 7 80 2267048 22760.63 412 403 99.6
D 1 52 366500 3676.18 412 403 99.6
D 15 36 214272 2147.58 412 403 99.6

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