ASTROSAT CZTI

Data Quality Report

Orbit 28431

Creation date: 2024-06-27T19:51:40.897326
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_101T21_9000004090_28431cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28431cztM0_level2_quad_clean.evt
Size (bytes)735,641,280121,556,160
Size701.6 MB 115.9 MB
Events in quadrant A3,224,058852,884
Events in quadrant B3,387,414870,630
Events in quadrant C3,448,180842,502
Events in quadrant D11,756,679637,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141090
B0144950
C0146010
D0396000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6834600.877963%
B6834801.170618%
C68331402.048880%
D6833302044.197278%

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 7844 6835 0 0 0.00% 0.00%
B 7844 6834 1 1 0.01% 0.01%
C 7843 6834 2 2 0.03% 0.03%
D 7843 6833 2865 2865 36.53% 41.93%

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 11650 65.19 831 814 166.2
A 3 137 8098 43.82 831 814 166.2
A 8 192 7995 43.2 831 814 166.2
B 0 230 52453 331.0 829 809 156.0
B 10 245 31009 193.56 829 809 156.0
B 0 190 22594 139.62 829 809 156.0
C 14 238 131675 698.49 811 815 187.3
C 3 233 83883 443.39 811 815 187.3
C 7 220 64682 340.9 811 815 187.3
D 1 52 8265728 51908.08 668 649 159.2
D 8 195 646803 4058.11 668 649 159.2
D 2 250 108336 676.32 668 649 159.2

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