ASTROSAT CZTI

Data Quality Report

Orbit 40174

Creation date: 2024-06-27T22:13:08.182603
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_032T04_9000005528_40174cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40174cztM0_level2_quad_clean.evt
Size (bytes)521,507,52079,035,840
Size497.3 MB 75.4 MB
Events in quadrant A2,797,447587,331
Events in quadrant B3,414,599569,645
Events in quadrant C9,002,623364,892
Events in quadrant D3,680,098501,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116713
B0140172
C0304452
D0148102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5272260.493171%
B52724187.928680%
C5272229143.455994%
D52723967.511381%

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 7034 5273 14 14 0.20% 0.27%
B 7034 5273 275 275 3.91% 5.22%
C 7034 5273 2248 2248 31.96% 42.63%
D 7034 5273 397 397 5.64% 7.53%

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 463129 4032.43 568 557 114.7
A 13 248 73754 638.09 568 557 114.7
A 7 3 49787 429.16 568 557 114.7
B 5 255 937137 8778.58 553 537 106.7
B 5 172 238189 2227.47 553 537 106.7
B 0 245 26368 242.11 553 537 106.7
C 9 187 7001536 65879.45 456 459 106.3
C 15 214 185705 1743.15 456 459 106.3
C 0 10 18694 171.59 456 459 106.3
D 12 227 1002559 7534.65 546 531 133.0
D 12 233 343701 2580.43 546 531 133.0
D 5 171 63055 470.14 546 531 133.0

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