ASTROSAT CZTI

Data Quality Report

Orbit 42072

Creation date: 2024-06-27T22:36:14.678220
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_037T03_9000005738_42072cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42072cztM0_level2_quad_clean.evt
Size (bytes)356,264,64087,261,120
Size339.8 MB 83.2 MB
Events in quadrant A4,406,140577,832
Events in quadrant B2,552,412603,640
Events in quadrant C2,497,493572,291
Events in quadrant D3,316,156514,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166803
B0112912
C0107542
D0135592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53421212.265069%
B5342460.861101%
C534250.093598%
D53421773.313366%

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 7044 5343 113 113 1.60% 2.11%
B 7044 5343 32 32 0.45% 0.60%
C 7044 5343 0 0 0.00% 0.00%
D 7044 5343 133 133 1.89% 2.49%

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 15 222 1394942 11443.93 589 575 121.8
A 10 83 563243 4617.96 589 575 121.8
A 15 223 133848 1093.81 589 575 121.8
B 3 112 127784 1101.0 589 572 115.5
B 5 255 89889 773.02 589 572 115.5
B 15 85 22280 187.88 589 572 115.5
C 15 214 225786 1671.06 576 581 134.8
C 12 249 16663 119.33 576 581 134.8
C 7 220 4405 28.37 576 581 134.8
D 12 6 434204 3070.19 569 553 141.2
D 1 52 316524 2237.03 569 553 141.2
D 12 233 125632 885.54 569 553 141.2

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