ASTROSAT CZTI

Data Quality Report

Orbit 27231

Creation date: 2024-06-27T19:37:59.495716
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/AS1T03_243T01_9000003918_27231cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27231cztM0_level2_quad_clean.evt
Size (bytes)595,923,840104,544,000
Size568.3 MB 99.7 MB
Events in quadrant A3,658,188680,182
Events in quadrant B4,317,044681,092
Events in quadrant C3,593,026656,336
Events in quadrant D5,973,370628,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156870
B0175220
C0154370
D0228460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7469730.977373%
B74693334.458428%
C74701341.793842%
D74703224.310576%

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 8554 7472 3 3 0.04% 0.04%
B 8554 7472 73 73 0.85% 0.98%
C 8555 7473 0 0 0.00% 0.00%
D 8555 7473 250 250 2.92% 3.35%

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 13 55454 292.51 923 903 186.5
A 8 192 17633 89.71 923 903 186.5
A 13 254 12049 59.77 923 903 186.5
B 15 33 348001 1977.31 912 888 175.5
B 3 64 210468 1193.86 912 888 175.5
B 5 172 120888 683.57 912 888 175.5
C 14 238 140642 668.76 881 886 209.0
C 2 16 9277 40.15 881 886 209.0
C 15 208 7616 32.2 881 886 209.0
D 1 52 2086630 9339.36 875 856 223.3
D 2 250 157061 699.43 875 856 223.3
D 7 38 121499 540.2 875 856 223.3

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