ASTROSAT CZTI

Data Quality Report

Orbit 20161202_G06_164T01_9000000844_level2

Creation date: 2025-11-08T01:54:40.687934
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/AS1G06_164T01_9000000844cztM0_level2.fits modeM0/AS1G06_164T01_9000000844cztM0_level2_quad_clean.evt
Size (bytes)376,364,160378,339,840
Size358.9 MB 360.8 MB
Events in quadrant A2,269,2162,277,985
Events in quadrant B2,180,2942,235,287
Events in quadrant C2,223,1882,149,116
Events in quadrant D1,946,0882,016,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08280
B08280
C08280
D08280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0969290
B0920550
C0828060
D0892250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4045812373.057492%
B4046011242.778052%
C404594030.996070%
D404676271.549411%

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 48862 40478 0 0 0.00% 0.00%
B 48862 40460 0 0 0.00% 0.00%
C 48862 40479 0 0 0.00% 0.00%
D 48862 40474 0 0 0.00% 0.00%

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 0 29 2240 11.41 590 556 147.7
A 7 110 1941 9.38 590 556 147.7
A 0 30 1772 8.24 590 556 147.7
B 2 9 1868 11.43 576 552 115.2
B 14 254 1538 8.56 576 552 115.2
B 12 226 1487 8.12 576 552 115.2
C 1 81 1638 7.05 588 546 154.8
C 1 80 1622 6.95 588 546 154.8
C 2 191 1510 6.23 588 546 154.8
D 3 14 1422 6.17 555 506 148.5
D 11 82 1421 6.16 555 506 148.5
D 6 231 1408 6.07 555 506 148.5

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