ASTROSAT CZTI

Data Quality Report

Orbit 27794

Creation date: 2024-06-27T19:44:29.059735
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/AS1A10_016T01_9000004016_27794cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27794cztM0_level2_quad_clean.evt
Size (bytes)580,452,48086,852,160
Size553.6 MB 82.8 MB
Events in quadrant A3,291,152562,883
Events in quadrant B3,794,208564,638
Events in quadrant C3,444,094546,898
Events in quadrant D6,607,117500,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137890
B0153390
C0142330
D0240410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527731.118431%
B65271822.788417%
C65271101.685307%
D6526125619.246093%

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 7527 6527 0 0 0.00% 0.00%
B 7527 6527 49 49 0.65% 0.75%
C 7527 6527 0 0 0.00% 0.00%
D 7525 6525 1025 1025 13.62% 15.71%

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 11149 60.17 853 834 171.4
A 3 137 7876 41.08 853 834 171.4
A 0 226 7396 38.28 853 834 171.4
B 3 64 319456 1984.15 843 823 160.6
B 10 245 129888 803.7 843 823 160.6
B 12 111 19001 113.2 843 823 160.6
C 14 238 131042 678.6 824 832 191.9
C 3 233 76204 392.81 824 832 191.9
C 8 128 10330 49.5 824 832 191.9
D 1 52 3427211 18849.47 761 743 181.8
D 2 250 166462 911.64 761 743 181.8
D 13 104 96728 528.02 761 743 181.8

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