ASTROSAT CZTI

Data Quality Report

Orbit 41083

Creation date: 2024-06-27T22:24:13.981431
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_095T02_9000005596_41083cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41083cztM0_level2_quad_clean.evt
Size (bytes)414,555,84093,389,760
Size395.4 MB 89.1 MB
Events in quadrant A3,158,441671,952
Events in quadrant B5,658,056567,681
Events in quadrant C2,743,071637,864
Events in quadrant D3,374,376580,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126923
B0203172
C0112072
D0133912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5289130.245793%
B5289104319.720174%
C5289300.567215%
D52892073.913783%

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 7352 5290 2 2 0.03% 0.04%
B 7352 5290 876 876 11.92% 16.56%
C 7352 5290 25 25 0.34% 0.47%
D 7352 5290 182 182 2.48% 3.44%

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 566379 4354.35 634 622 129.9
A 12 189 68305 520.92 634 622 129.9
A 2 79 42366 321.28 634 622 129.9
B 0 186 3222481 29315.27 576 562 109.9
B 0 245 70677 637.96 576 562 109.9
B 5 255 57576 518.75 576 562 109.9
C 15 214 228632 1627.87 608 613 140.1
C 0 10 113275 804.31 608 613 140.1
C 12 249 13407 91.34 608 613 140.1
D 2 249 564623 3809.69 608 592 148.1
D 13 171 131798 886.22 608 592 148.1
D 13 249 120466 809.68 608 592 148.1

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