ASTROSAT CZTI

Data Quality Report

Orbit 20211115_A11_080T02_9000004768_level2

Creation date: 2025-12-29T21:45:47.632428
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/AS1A11_080T02_9000004768cztM0_level2.fits modeM0/AS1A11_080T02_9000004768cztM0_level2_quad_clean.evt
Size (bytes)1,282,158,7201,231,911,360
Size1.2 GB 1.1 GB
Events in quadrant A8,081,6787,522,158
Events in quadrant B7,352,8247,232,398
Events in quadrant C7,796,9247,158,671
Events in quadrant D6,525,8686,327,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05110
B05110
C05110
D05120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027000
B027000
C027000
D027000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02688000
B03755320
C02904880
D04733340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1323481680.126938%
B13234994317.125857%
C13234919301.458266%
D13235275745.722618%

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 188376 132358 0 0 0.00% 0.00%
B 188376 132243 0 0 0.00% 0.00%
C 188376 132328 0 0 0.00% 0.00%
D 188376 132248 0 0 0.00% 0.00%

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 9 19 6592 8.92 2112 1990 515.8
A 7 110 6510 8.76 2112 1990 515.8
A 0 29 6356 8.46 2112 1990 515.8
B 2 9 6385 11.86 1956 1871 380.5
B 3 80 5730 10.14 1956 1871 380.5
B 2 8 5292 8.99 1956 1871 380.5
C 1 81 6565 8.96 2064 1946 515.7
C 1 80 6345 8.53 2064 1946 515.7
C 1 65 5317 6.54 2064 1946 515.7
D 10 113 4799 6.2 1875 1715 497.3
D 7 3 4772 6.15 1875 1715 497.3
D 4 160 4743 6.09 1875 1715 497.3

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