ASTROSAT CZTI

Data Quality Report

Orbit 40456

Creation date: 2024-06-27T22:16:20.235071
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_022T01_9000005540_40456cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40456cztM0_level2_quad_clean.evt
Size (bytes)354,041,28091,650,240
Size337.6 MB 87.4 MB
Events in quadrant A2,925,010621,866
Events in quadrant B2,562,017641,980
Events in quadrant C2,700,006613,456
Events in quadrant D4,473,868498,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122033
B0115892
C0117372
D0172682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5704100.175316%
B570440.070126%
C5704140.245442%
D570477413.569425%

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 7407 5705 6 6 0.08% 0.11%
B 7407 5705 0 0 0.00% 0.00%
C 7407 5705 8 8 0.11% 0.14%
D 7407 5705 364 364 4.91% 6.38%

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 505297 4029.55 615 603 125.2
A 3 1 17289 133.22 615 603 125.2
A 2 79 17263 133.02 615 603 125.2
B 0 230 54383 455.77 610 593 118.0
B 4 170 43785 365.97 610 593 118.0
B 3 112 31903 265.29 610 593 118.0
C 15 214 249293 1798.3 595 599 138.3
C 14 254 104447 750.92 595 599 138.3
C 3 233 14868 103.18 595 599 138.3
D 12 227 1685190 12220.25 562 546 137.9
D 13 249 209466 1515.49 562 546 137.9
D 12 128 176771 1278.32 562 546 137.9

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