ASTROSAT CZTI

Data Quality Report

Orbit 19323

Creation date: 2024-06-27T18:01:23.579190
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/AS1A05_204T01_9000002856_19323cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19323cztM0_level2_quad_clean.evt
Size (bytes)524,390,400118,650,240
Size500.1 MB 113.2 MB
Events in quadrant A3,342,270834,156
Events in quadrant B3,380,367835,151
Events in quadrant C3,329,532792,176
Events in quadrant D5,409,166699,919

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139081
B0140291
C0137871
D0201952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193911.469401%
B6194961.549887%
C61941272.050371%
D6193100916.292588%

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 7533 6193 4 4 0.05% 0.06%
B 7534 6194 6 6 0.08% 0.10%
C 7534 6194 0 0 0.00% 0.00%
D 7533 6193 791 791 10.50% 12.77%

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 11 29 14729 81.36 858 843 170.7
A 5 16 13659 75.09 858 843 170.7
A 9 143 11120 60.22 858 843 170.7
B 15 32 34431 216.93 838 819 154.9
B 0 190 25802 161.24 838 819 154.9
B 0 229 23987 149.53 838 819 154.9
C 14 238 130679 692.5 816 824 187.5
C 3 233 16524 83.73 816 824 187.5
C 13 61 5729 26.16 816 824 187.5
D 7 238 2247971 12350.91 762 743 181.9
D 11 176 159502 872.55 762 743 181.9
D 1 52 44149 238.56 762 743 181.9

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