ASTROSAT CZTI

Data Quality Report

Orbit 41185

Creation date: 2024-06-27T22:25:23.369973
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_101T01_9000005612_41185cztM0_level2.fits modeM0/AS1A12_101T01_9000005612_41185cztM0_level2_quad_clean.evt
Size (bytes)327,444,48093,879,360
Size312.3 MB 89.5 MB
Events in quadrant A2,894,759650,229
Events in quadrant B2,477,279669,695
Events in quadrant C3,311,523593,083
Events in quadrant D3,033,199566,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115523
B0106802
C0129582
D0125512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5185130.250723%
B518590.173578%
C51852424.667310%
D51851462.815815%

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 7308 5186 2 2 0.03% 0.04%
B 7308 5186 5 5 0.07% 0.10%
C 7308 5186 245 245 3.35% 4.72%
D 7308 5186 101 101 1.38% 1.95%

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 489501 3971.3 610 600 123.1
A 12 189 31030 247.18 610 600 123.1
A 13 6 7987 60.0 610 600 123.1
B 0 190 51135 442.36 601 585 114.3
B 5 255 40804 351.95 601 585 114.3
B 0 229 30573 262.42 601 585 114.3
C 0 10 503737 3887.45 567 572 129.4
C 9 54 308698 2380.58 567 572 129.4
C 15 214 222725 1716.35 567 572 129.4
D 13 249 561977 4036.71 580 563 139.1
D 2 249 197948 1419.25 580 563 139.1
D 2 120 41979 297.79 580 563 139.1

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