ASTROSAT CZTI

Data Quality Report

Orbit 39504

Creation date: 2024-06-27T22:05:26.517028
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_39504cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39504cztM0_level2_quad_clean.evt
Size (bytes)320,621,76091,010,880
Size305.8 MB 86.8 MB
Events in quadrant A2,824,524613,881
Events in quadrant B2,266,969638,357
Events in quadrant C2,437,163615,079
Events in quadrant D3,955,171542,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114963
B0100702
C0102252
D0150542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937210.425360%
B493740.081021%
C493760.121531%
D49372464.982783%

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 7000 4938 12 12 0.17% 0.24%
B 7000 4938 3 3 0.04% 0.06%
C 7000 4938 3 3 0.04% 0.06%
D 7000 4938 231 231 3.30% 4.68%

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 407686 3574.89 562 552 113.9
A 6 10 144979 1268.16 562 552 113.9
A 9 143 60472 526.14 562 552 113.9
B 5 172 32214 298.24 566 553 106.2
B 12 111 12888 116.19 566 553 106.2
B 11 111 11968 107.53 566 553 106.2
C 15 214 208704 1615.39 560 566 128.8
C 3 233 25061 190.11 560 566 128.8
C 0 10 16616 124.57 560 566 128.8
D 12 227 653510 4907.76 545 531 133.1
D 2 249 422705 3173.04 545 531 133.1
D 12 0 359738 2699.78 545 531 133.1

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