ASTROSAT CZTI

Data Quality Report

Orbit 26506

Creation date: 2024-06-27T19:29:52.773531
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/AS1C05_017T01_9000003836_26506cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26506cztM0_level2_quad_clean.evt
Size (bytes)573,517,440101,301,120
Size546.9 MB 96.6 MB
Events in quadrant A3,488,664661,524
Events in quadrant B3,961,962668,198
Events in quadrant C3,814,257645,457
Events in quadrant D5,649,227624,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142830
B0159870
C0154040
D0212790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67221141.695924%
B67222213.287712%
C67221752.603392%
D67226469.610235%

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 8872 6724 0 0 0.00% 0.00%
B 8872 6722 51 51 0.57% 0.76%
C 8872 6722 7 7 0.08% 0.10%
D 8872 6722 440 440 4.96% 6.55%

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 13 254 11908 60.59 904 888 181.9
A 3 137 7857 38.32 904 888 181.9
A 0 226 7594 36.87 904 888 181.9
B 5 172 204917 1209.51 894 874 168.7
B 0 189 199993 1180.32 894 874 168.7
B 0 190 20989 119.24 894 874 168.7
C 3 233 208147 1016.98 873 881 203.8
C 14 238 139867 681.95 873 881 203.8
C 2 16 40412 193.96 873 881 203.8
D 1 52 2199309 10782.66 850 834 203.9
D 12 233 159922 780.26 850 834 203.9
D 14 35 39607 190.17 850 834 203.9

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