ASTROSAT CZTI

Data Quality Report

Orbit 42442

Creation date: 2024-06-27T22:40:13.288724
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/AS1C07_001T10_9000005806_42442cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42442cztM0_level2_quad_clean.evt
Size (bytes)415,497,60081,599,040
Size396.2 MB 77.8 MB
Events in quadrant A2,955,269587,580
Events in quadrant B6,077,890391,397
Events in quadrant C2,511,824578,935
Events in quadrant D3,413,519533,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119982
B0219392
C0110222
D0140192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5412130.240207%
B5412185934.349593%
C541280.147820%
D5412781.441242%

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 7145 5413 5 5 0.07% 0.09%
B 7145 5413 1602 1602 22.42% 29.60%
C 7145 5413 4 4 0.06% 0.07%
D 7145 5413 80 80 1.12% 1.48%

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 594394 4915.95 584 572 120.8
A 13 248 68430 561.76 584 572 120.8
A 14 223 14791 117.71 584 572 120.8
B 0 186 4166747 47680.73 452 439 87.4
B 5 255 63831 725.48 452 439 87.4
B 5 172 28691 323.33 452 439 87.4
C 15 214 228615 1734.62 564 568 131.5
C 5 250 32927 246.14 564 568 131.5
C 14 254 16540 121.49 564 568 131.5
D 1 52 548569 3967.95 566 550 138.1
D 13 171 195315 1410.2 566 550 138.1
D 12 6 151303 1091.53 566 550 138.1

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