ASTROSAT CZTI

Data Quality Report

Orbit 10955

Creation date: 2024-06-27T16:06:12.314821
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/AS1T01_193T01_9000001590_10955cztM0_level2.evt modeM0/AS1T01_193T01_9000001590_10955cztM0_level2_quad_clean.evt
Size (bytes)419,696,64081,250,560
Size400.3 MB 77.5 MB
Events in quadrant A3,921,358524,979
Events in quadrant B3,332,462540,509
Events in quadrant C2,209,012550,087
Events in quadrant D2,927,418514,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011222
B011216
C011218
D011216

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168602133
B0148691974
C0112121540
D0139162320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47044469.481293%
B46993757.980421%
C4744150.316189%
D46991653.511385%

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 6755 4894 297 297 4.40% 6.07%
B 6755 4903 214 214 3.17% 4.36%
C 6755 4957 0 0 0.00% 0.00%
D 6755 4893 98 98 1.45% 2.00%

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 8 5 1541575 13457.65 567 558 114.5
A 8 15 178390 1553.0 567 558 114.5
A 11 29 13529 113.28 567 558 114.5
B 4 239 918620 8589.41 564 552 106.9
B 4 173 174475 1627.22 564 552 106.9
B 0 214 20689 188.4 564 552 106.9
C 13 61 4172 27.93 565 568 129.0
C 14 128 3479 22.56 565 568 129.0
C 12 4 2157 12.31 565 568 129.0
D 1 52 296298 2237.03 552 537 132.2
D 10 253 167855 1265.53 552 537 132.2
D 8 195 128117 964.97 552 537 132.2

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