ASTROSAT CZTI

Data Quality Report

Orbit 40084

Creation date: 2024-06-27T22:12:09.350896
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/AS1T05_086T01_9000005518_40084cztM0_level2.fits modeM0/AS1T05_086T01_9000005518_40084cztM0_level2_quad_clean.evt
Size (bytes)396,722,88098,023,680
Size378.3 MB 93.5 MB
Events in quadrant A2,854,562682,507
Events in quadrant B2,668,022708,765
Events in quadrant C5,170,487638,600
Events in quadrant D3,584,842571,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116603
B0110472
C0188832
D0142322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524190.171723%
B524190.171723%
C52414137.880176%
D52413176.048464%

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 7333 5242 7 7 0.10% 0.13%
B 7333 5242 1 1 0.01% 0.02%
C 7333 5242 416 416 5.67% 7.94%
D 7333 5242 305 305 4.16% 5.82%

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 448307 3574.49 608 599 125.3
A 9 191 32513 254.8 608 599 125.3
A 13 6 10349 77.84 608 599 125.3
B 0 189 198767 1681.42 613 597 117.9
B 5 63 28589 237.5 613 597 117.9
B 0 230 22448 185.4 613 597 117.9
C 9 187 2214000 16301.19 583 589 135.8
C 15 214 215565 1583.24 583 589 135.8
C 3 233 209727 1540.25 583 589 135.8
D 12 227 699877 4979.55 565 549 140.4
D 13 249 497625 3539.42 565 549 140.4
D 2 250 80832 571.65 565 549 140.4

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