ASTROSAT CZTI

Data Quality Report

Orbit 38850

Creation date: 2024-06-27T21:57:13.730314
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_077T06_9000005408_38850cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38850cztM0_level2_quad_clean.evt
Size (bytes)387,653,76093,911,040
Size369.7 MB 89.6 MB
Events in quadrant A2,964,211655,179
Events in quadrant B2,974,927661,996
Events in quadrant C2,776,555637,724
Events in quadrant D5,214,679511,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122933
B0124322
C0116122
D0191722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5386320.594133%
B53861262.339398%
C5386130.241367%
D538684615.707390%

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 7178 5387 12 12 0.17% 0.22%
B 7178 5387 72 72 1.00% 1.34%
C 7178 5387 9 9 0.13% 0.17%
D 7178 5387 716 716 9.97% 13.29%

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 415685 3238.99 631 618 128.1
A 13 248 78041 604.17 631 618 128.1
A 9 143 13941 103.96 631 618 128.1
B 4 251 238429 1981.33 627 611 120.0
B 5 184 176150 1462.46 627 611 120.0
B 5 172 38695 317.28 627 611 120.0
C 15 214 224327 1550.31 622 627 144.3
C 14 254 95523 657.66 622 627 144.3
C 0 10 22762 153.4 622 627 144.3
D 2 250 1810384 13010.92 569 554 139.1
D 12 227 381321 2737.34 569 554 139.1
D 2 249 299061 2145.98 569 554 139.1

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