ASTROSAT CZTI

Data Quality Report

Orbit 42019

Creation date: 2024-06-27T22:35:47.517156
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/AS1A12_011T26_9000005732_42019cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42019cztM0_level2_quad_clean.evt
Size (bytes)431,628,480105,814,080
Size411.6 MB 100.9 MB
Events in quadrant A4,843,241692,817
Events in quadrant B3,350,950723,485
Events in quadrant C3,130,441694,010
Events in quadrant D4,135,669629,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186362
B0146412
C0136192
D0169252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66542613.922453%
B6654420.631199%
C6654150.225428%
D66542133.201082%

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 7968 6654 201 201 2.52% 3.02%
B 7968 6655 21 21 0.26% 0.32%
C 7968 6655 11 11 0.14% 0.17%
D 7968 6655 193 193 2.42% 2.90%

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 15 223 1233859 8645.3 698 682 142.6
A 10 83 698360 4891.14 698 682 142.6
A 12 189 155772 1087.27 698 682 142.6
B 0 190 223286 1647.3 704 684 135.1
B 4 171 193720 1428.51 704 684 135.1
B 0 186 86918 638.15 704 684 135.1
C 15 214 278843 1705.4 695 698 163.1
C 9 54 73269 444.96 695 698 163.1
C 8 79 43769 264.08 695 698 163.1
D 2 249 587937 3461.18 689 669 169.7
D 5 32 182633 1072.44 689 669 169.7
D 13 249 156856 920.52 689 669 169.7

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