ASTROSAT CZTI

Data Quality Report

Orbit 41632

Creation date: 2024-06-27T22:30:55.657585
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_035T02_9000005680_41632cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41632cztM0_level2_quad_clean.evt
Size (bytes)512,962,56088,508,160
Size489.2 MB 84.4 MB
Events in quadrant A2,983,753653,412
Events in quadrant B3,805,481641,489
Events in quadrant C3,749,175592,334
Events in quadrant D8,031,508415,563

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120522
B0148162
C0144852
D0275192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5385150.278552%
B53853065.682451%
C53853606.685237%
D5385189035.097493%

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 7267 5386 1 1 0.01% 0.02%
B 7267 5386 183 183 2.52% 3.40%
C 7267 5386 327 327 4.50% 6.07%
D 7267 5386 1688 1688 23.23% 31.34%

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 516796 4020.88 631 619 128.4
A 13 248 13479 100.18 631 619 128.4
A 13 254 9753 71.15 631 619 128.4
B 0 186 1289864 10948.06 617 601 117.8
B 5 255 35235 294.1 617 601 117.8
B 15 35 26557 220.41 617 601 117.8
C 0 15 838427 6120.68 588 593 136.9
C 0 10 391148 2853.14 588 593 136.9
C 15 214 229796 1674.41 588 593 136.9
D 12 79 5178905 40024.04 525 510 129.4
D 13 249 393481 3037.29 525 510 129.4
D 2 249 179598 1384.18 525 510 129.4

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