ASTROSAT CZTI

Data Quality Report

Orbit 42028

Creation date: 2024-06-27T22:35:55.390255
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_006T12_9000005734_42028cztM0_level2.fits modeM0/AS1A12_006T12_9000005734_42028cztM0_level2_quad_clean.evt
Size (bytes)229,985,28066,312,000
Size219.3 MB 63.2 MB
Events in quadrant A2,208,403445,712
Events in quadrant B2,006,995456,872
Events in quadrant C1,834,417431,586
Events in quadrant D2,153,478393,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088291
B086201
C079561
D092041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396550.126103%
B3965340.857503%
C396520.050441%
D3965681.715006%

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 3965 3965 3 3 0.08% 0.08%
B 3965 3965 23 23 0.58% 0.58%
C 3965 3965 0 0 0.00% 0.00%
D 3965 3965 47 47 1.19% 1.19%

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 366128 3990.88 442 433 91.6
A 12 189 96073 1043.73 442 433 91.6
A 15 223 24472 262.34 442 433 91.6
B 5 255 111442 1284.53 436 423 86.4
B 3 112 73730 848.19 436 423 86.4
B 7 202 51602 592.16 436 423 86.4
C 15 214 165040 1645.87 427 430 100.0
C 13 61 2823 23.93 427 430 100.0
C 12 249 2471 20.41 427 430 100.0
D 2 249 161895 1535.9 426 414 105.1
D 12 6 146854 1392.84 426 414 105.1
D 13 249 109233 1035.02 426 414 105.1

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