ASTROSAT CZTI

Data Quality Report

Orbit 29341

Creation date: 2024-06-27T20:03:00.342457
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/AS1T03_279T01_9000004218_29341cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29341cztM0_level2_quad_clean.evt
Size (bytes)751,939,20090,737,280
Size717.1 MB 86.5 MB
Events in quadrant A3,218,964647,813
Events in quadrant B3,281,081651,276
Events in quadrant C3,999,023613,746
Events in quadrant D11,875,290422,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128821
B0131031
C0157681
D0392891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5886801.359157%
B5887580.985222%
C58871632.768813%
D5887394967.080007%

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 7181 5887 11 11 0.15% 0.19%
B 7182 5888 6 6 0.08% 0.10%
C 7182 5888 1 1 0.01% 0.02%
D 7182 5888 3134 3134 43.64% 53.23%

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 15 174 59736 363.96 817 803 161.9
A 13 254 11853 68.24 817 803 161.9
A 0 226 7096 38.86 817 803 161.9
B 10 245 76168 509.02 802 786 148.1
B 0 190 25858 169.3 802 786 148.1
B 12 111 16523 106.26 802 786 148.1
C 3 233 786548 4390.13 779 787 179.0
C 14 238 137379 763.15 779 787 179.0
C 14 254 16218 86.21 779 787 179.0
D 12 33 6215761 46785.86 561 548 132.8
D 1 52 2458854 18505.23 561 548 132.8
D 13 104 314495 2363.28 561 548 132.8

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