ASTROSAT CZTI

Data Quality Report

Orbit 13924

Creation date: 2024-06-27T16:47:58.128815
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/AS1A04_219T01_9000002054_13924cztM0_level2.evt modeM0/AS1A04_219T01_9000002054_13924cztM0_level2_quad_clean.evt
Size (bytes)549,696,96092,643,840
Size524.2 MB 88.4 MB
Events in quadrant A3,244,081601,953
Events in quadrant B3,189,488611,799
Events in quadrant C3,270,619608,732
Events in quadrant D6,522,469548,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135143
B0134092
C0134322
D0238502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210520.837359%
B6210641.030596%
C6210390.628019%
D621063110.161031%

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 7526 6211 4 4 0.05% 0.06%
B 7526 6211 6 6 0.08% 0.10%
C 7526 6211 4 4 0.05% 0.06%
D 7526 6211 604 604 8.03% 9.72%

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 15 69 125388 785.53 797 782 158.6
A 8 15 26223 160.38 797 782 158.6
A 1 162 17247 103.8 797 782 158.6
B 0 244 32816 215.02 793 774 149.0
B 4 80 21323 137.89 793 774 149.0
B 12 111 17404 111.59 793 774 149.0
C 3 233 205777 1135.6 784 790 180.5
C 14 234 11072 56.96 784 790 180.5
C 13 61 5633 26.83 784 790 180.5
D 1 52 2451695 13749.52 753 738 178.3
D 13 122 742323 4160.19 753 738 178.3
D 12 110 138124 770.72 753 738 178.3

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