ASTROSAT CZTI

Data Quality Report

Orbit 35946

Creation date: 2022-06-09T04:20:19.243574
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_080T01_9000005146_35946cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35946cztM0_level2_quad_clean.evt
Size (bytes)463,080,96074,704,320
Size441.6 MB 71.2 MB
Events in quadrant A2,756,035487,197
Events in quadrant B3,713,221476,228
Events in quadrant C3,053,100473,308
Events in quadrant D4,127,742439,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113843
B0145062
C0121322
D0157162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A551180.145164%
B55113125.661404%
C55111222.213754%
D55113796.877155%

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 9035 5513 0 0 0.00% 0.00%
B 9035 5513 223 223 2.47% 4.04%
C 9035 5513 88 88 0.97% 1.60%
D 9035 5513 334 334 3.70% 6.06%

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 171234 1264.57 662 652 134.9
A 15 169 22650 163.08 662 652 134.9
A 13 254 9061 62.34 662 652 134.9
B 5 172 835365 6744.82 638 624 123.8
B 4 171 161219 1297.63 638 624 123.8
B 0 213 100911 810.33 638 624 123.8
C 0 10 307535 2083.46 631 638 147.3
C 15 214 229786 1555.64 631 638 147.3
C 14 128 15990 104.22 631 638 147.3
D 12 227 740123 4820.33 623 608 153.4
D 13 249 238790 1552.52 623 608 153.4
D 8 195 209140 1359.26 623 608 153.4

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