ASTROSAT CZTI

Data Quality Report

Orbit 39230

Creation date: 2024-06-27T22:02:02.161086
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_054T04_9000005446_39230cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39230cztM0_level2_quad_clean.evt
Size (bytes)514,494,72074,594,880
Size490.7 MB 71.1 MB
Events in quadrant A2,826,333612,333
Events in quadrant B2,349,683621,911
Events in quadrant C2,362,575574,486
Events in quadrant D11,134,254115,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110872
B099131
C096631
D0363211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4770821.719078%
B4770200.419287%
C477040.083857%
D4770404284.737945%

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 6893 4771 52 52 0.75% 1.09%
B 6893 4771 12 12 0.17% 0.25%
C 6893 4771 0 0 0.00% 0.00%
D 6893 4766 3024 3024 43.87% 63.45%

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 359018 3113.78 571 561 115.1
A 13 248 262401 2274.51 571 561 115.1
A 13 254 9081 74.01 571 561 115.1
B 5 172 87758 816.74 560 545 106.8
B 5 255 47369 438.5 560 545 106.8
B 0 190 19139 174.13 560 545 106.8
C 15 214 201712 1607.6 543 546 125.1
C 0 239 23880 186.47 543 546 125.1
C 9 187 5109 36.46 543 546 125.1
D 12 235 9346698 122698.57 310 301 76.2
D 2 250 238180 3122.85 310 301 76.2
D 1 47 125538 1644.09 310 301 76.2

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