ASTROSAT CZTI

Data Quality Report

Orbit 29456

Creation date: 2024-06-27T20:04:19.068758
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_102T08_9000004240_29456cztM0_level2.evt modeM0/AS1A10_102T08_9000004240_29456cztM0_level2_quad_clean.evt
Size (bytes)754,580,16068,209,920
Size719.6 MB 65.1 MB
Events in quadrant A3,233,130473,844
Events in quadrant B3,316,429488,291
Events in quadrant C3,560,162449,032
Events in quadrant D12,338,622235,149

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130401
B0133361
C0143741
D0407512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5988360.601202%
B5989460.768075%
C59891843.072299%
D5988351758.734135%

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 7358 5989 0 0 0.00% 0.00%
B 7359 5990 0 0 0.00% 0.00%
C 7359 5990 2 2 0.03% 0.03%
D 7358 5989 3261 3261 44.32% 54.45%

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 11196 62.77 836 823 165.2
A 3 137 7241 38.84 836 823 165.2
A 0 226 7224 38.74 836 823 165.2
B 12 111 18125 111.01 837 819 155.9
B 11 111 16537 100.82 837 819 155.9
B 14 111 15366 93.31 837 819 155.9
C 3 233 271285 1491.13 786 793 181.4
C 14 238 163296 895.82 786 793 181.4
C 14 254 47643 258.27 786 793 181.4
D 8 195 4954555 38684.78 535 522 128.1
D 1 52 4696307 36668.19 535 522 128.1
D 7 80 355815 2774.39 535 522 128.1

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