ASTROSAT CZTI

Data Quality Report

Orbit 39618

Creation date: 2024-06-27T22:06:52.453567
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_018T01_9000005488_39618cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39618cztM0_level2_quad_clean.evt
Size (bytes)407,148,48098,176,320
Size388.3 MB 93.6 MB
Events in quadrant A3,315,880678,328
Events in quadrant B2,792,701682,767
Events in quadrant C4,643,683633,411
Events in quadrant D3,886,938588,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134823
B0120532
C0175582
D0152082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562190.341604%
B5562691.240561%
C55621933.469975%
D55632213.972677%

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 7414 5563 8 8 0.11% 0.14%
B 7414 5563 45 45 0.61% 0.81%
C 7414 5563 218 218 2.94% 3.92%
D 7415 5564 201 201 2.71% 3.61%

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 471607 3700.22 634 621 127.3
A 15 222 311079 2439.06 634 621 127.3
A 15 223 30872 237.66 634 621 127.3
B 5 255 320667 2693.74 624 606 118.8
B 0 213 18863 153.66 624 606 118.8
B 12 111 14582 117.63 624 606 118.8
C 9 187 1469003 10315.15 613 618 142.4
C 15 208 527385 3700.45 613 618 142.4
C 15 214 230784 1616.88 613 618 142.4
D 2 249 790955 5252.3 618 601 150.5
D 13 249 145639 963.85 618 601 150.5
D 13 174 123386 815.97 618 601 150.5

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