ASTROSAT CZTI

Data Quality Report

Orbit 17772

Creation date: 2024-06-27T17:40:41.712005
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/AS1A05_015T01_9000002650_17772cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17772cztM0_level2_quad_clean.evt
Size (bytes)591,108,48093,746,880
Size563.7 MB 89.4 MB
Events in quadrant A2,926,407625,530
Events in quadrant B3,112,677642,862
Events in quadrant C4,927,917577,585
Events in quadrant D6,522,314567,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128381
B0133071
C0187391
D0236851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6088210.344941%
B6088500.821288%
C608889714.733903%
D608895415.670171%

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 7318 6089 0 0 0.00% 0.00%
B 7318 6089 10 10 0.14% 0.16%
C 7318 6088 471 471 6.44% 7.74%
D 7318 6088 929 929 12.69% 15.26%

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 15 174 9113 54.79 758 744 152.8
A 0 226 6504 37.71 758 744 152.8
A 12 194 5654 32.14 758 744 152.8
B 0 244 36458 249.27 764 748 143.3
B 0 219 33795 230.68 764 748 143.3
B 12 111 16540 110.24 764 748 143.3
C 4 254 2121392 13367.44 679 684 158.6
C 14 238 104224 652.64 679 684 158.6
C 5 218 36439 225.37 679 684 158.6
D 7 238 3741618 23377.99 675 661 160.0
D 10 70 122276 760.0 675 661 160.0
D 1 52 54529 336.63 675 661 160.0

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