ASTROSAT CZTI

Data Quality Report

Orbit 40029

Creation date: 2024-06-27T22:11:28.286115
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_054T03_9000005516_40029cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40029cztM0_level2_quad_clean.evt
Size (bytes)314,449,92088,231,680
Size299.9 MB 84.1 MB
Events in quadrant A2,961,915587,669
Events in quadrant B2,382,532607,662
Events in quadrant C2,977,403576,838
Events in quadrant D2,901,710525,794

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119223
B0108872
C0121702
D0122962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341120.224677%
B534180.149785%
C5341460.861262%
D5341731.366785%

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 7164 5342 8 8 0.11% 0.15%
B 7164 5342 1 1 0.01% 0.02%
C 7164 5342 52 52 0.73% 0.97%
D 7164 5342 65 65 0.91% 1.22%

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 476293 4023.16 581 570 118.2
A 12 189 96231 809.0 581 570 118.2
A 6 10 93749 788.01 581 570 118.2
B 4 170 57394 503.64 578 562 112.8
B 4 171 26515 229.99 578 562 112.8
B 15 85 14558 124.03 578 562 112.8
C 14 254 328568 2492.53 565 568 131.6
C 15 214 241361 1829.83 565 568 131.6
C 9 187 168117 1273.23 565 568 131.6
D 1 47 146969 1045.42 565 549 140.1
D 13 249 131753 936.78 565 549 140.1
D 2 31 127609 907.2 565 549 140.1

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