ASTROSAT CZTI

Data Quality Report

Orbit 38679

Creation date: 2024-06-27T21:55:00.723219
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_054T01_9000005392_38679cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38679cztM0_level2_quad_clean.evt
Size (bytes)346,083,84095,578,560
Size330.1 MB 91.2 MB
Events in quadrant A2,941,920659,991
Events in quadrant B2,813,207676,773
Events in quadrant C2,735,991633,712
Events in quadrant D3,916,366560,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118973
B0115152
C0111402
D0150922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183140.270114%
B5183300.578815%
C5183360.694578%
D51832875.537334%

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 7274 5183 13 13 0.18% 0.25%
B 7274 5184 16 16 0.22% 0.31%
C 7274 5184 40 40 0.55% 0.77%
D 7274 5184 247 247 3.40% 4.76%

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 10 83 397942 3244.06 613 603 122.5
A 13 248 107182 870.16 613 603 122.5
A 12 189 53779 434.15 613 603 122.5
B 4 251 254912 2202.84 608 594 115.5
B 4 171 143015 1233.62 608 594 115.5
B 0 230 16791 140.29 608 594 115.5
C 15 214 210549 1541.26 591 597 136.2
C 15 208 154736 1131.53 591 597 136.2
C 15 159 32635 235.19 591 597 136.2
D 12 227 641667 4512.25 579 562 142.1
D 10 118 544794 3830.43 579 562 142.1
D 2 16 164362 1152.86 579 562 142.1

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