ASTROSAT CZTI

Data Quality Report

Orbit 39140

Creation date: 2024-06-27T22:00:53.982259
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_044T16_9000005442_39140cztM0_level2.fits modeM0/AS1A12_044T16_9000005442_39140cztM0_level2_quad_clean.evt
Size (bytes)344,871,36092,580,480
Size328.9 MB 88.3 MB
Events in quadrant A2,810,914627,463
Events in quadrant B2,441,421646,037
Events in quadrant C2,578,967615,501
Events in quadrant D4,531,363551,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114353
B0105562
C0106922
D0170612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5182170.328059%
B5182150.289464%
C518260.115785%
D51822304.438441%

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 7005 5183 7 7 0.10% 0.14%
B 7005 5183 9 9 0.13% 0.17%
C 7005 5183 0 0 0.00% 0.00%
D 7005 5183 198 198 2.83% 3.82%

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 395856 3179.31 612 602 124.3
A 9 143 40953 324.57 612 602 124.3
A 13 254 6646 48.62 612 602 124.3
B 5 172 46249 390.92 608 592 116.8
B 12 111 14919 122.67 608 592 116.8
B 11 111 13684 112.1 608 592 116.8
C 15 214 218448 1560.87 598 604 139.6
C 9 187 19764 137.28 598 604 139.6
C 13 61 3966 24.09 598 604 139.6
D 12 235 1068673 7594.07 586 570 140.6
D 5 222 412305 2927.38 586 570 140.6
D 2 120 337731 2397.17 586 570 140.6

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