ASTROSAT CZTI

Data Quality Report

Orbit 39030

Creation date: 2024-06-27T21:59:20.595971
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_042T01_9000005428_39030cztM0_level2.fits modeM0/AS1A12_042T01_9000005428_39030cztM0_level2_quad_clean.evt
Size (bytes)335,361,60090,783,360
Size319.8 MB 86.6 MB
Events in quadrant A4,192,707589,817
Events in quadrant B2,427,849623,628
Events in quadrant C2,505,542601,852
Events in quadrant D2,866,761555,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160773
B0111492
C0109352
D0122302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54052444.514339%
B5405180.333025%
C540560.111008%
D5405510.943571%

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 7138 5406 236 236 3.31% 4.37%
B 7138 5406 13 13 0.18% 0.24%
C 7138 5406 2 2 0.03% 0.04%
D 7138 5406 51 51 0.71% 0.94%

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 15 222 1387999 12036.42 571 558 115.3
A 10 83 412423 3573.04 571 558 115.3
A 13 248 131955 1139.9 571 558 115.3
B 5 172 122400 1100.24 578 562 110.7
B 0 230 18556 162.49 578 562 110.7
B 12 111 13901 120.46 578 562 110.7
C 15 214 228742 1728.06 573 577 132.0
C 15 159 15872 115.84 573 577 132.0
C 1 128 6467 44.61 573 577 132.0
D 12 235 245358 1773.88 566 550 138.0
D 2 249 137070 989.22 566 550 138.0
D 13 171 129066 931.23 566 550 138.0

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