ASTROSAT CZTI

Data Quality Report

Orbit 36768

Creation date: 2024-06-27T21:31:24.276436
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/AS1A11_087T05_9000005240_36768cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36768cztM0_level2_quad_clean.evt
Size (bytes)662,091,84063,573,120
Size631.4 MB 60.6 MB
Events in quadrant A2,545,849461,653
Events in quadrant B11,523,719195,056
Events in quadrant C2,736,071474,675
Events in quadrant D2,909,824444,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105323
B0375732
C0109532
D0117452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4958130.262203%
B4958412983.279548%
C4958270.544574%
D4958921.855587%

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 7081 4959 4 4 0.06% 0.08%
B 7080 4957 3947 3947 55.75% 79.62%
C 7081 4959 23 23 0.32% 0.46%
D 7081 4959 73 73 1.03% 1.47%

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 200529 1680.88 596 587 119.0
A 9 143 25722 211.31 596 587 119.0
A 15 223 8282 64.69 596 587 119.0
B 12 1 10312007 188574.03 281 274 54.7
B 0 213 33831 613.67 281 274 54.7
B 0 219 17209 309.7 281 274 54.7
C 15 214 212530 1543.87 592 598 137.3
C 14 254 152634 1107.54 592 598 137.3
C 0 10 33007 236.09 592 598 137.3
D 13 249 253173 1787.29 586 573 141.3
D 10 118 136930 964.81 586 573 141.3
D 2 250 67402 472.85 586 573 141.3

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