ASTROSAT CZTI

Data Quality Report

Orbit 42445

Creation date: 2024-06-27T22:40:15.932126
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_42445cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42445cztM0_level2_quad_clean.evt
Size (bytes)416,496,96080,789,760
Size397.2 MB 77.0 MB
Events in quadrant A2,903,695614,811
Events in quadrant B6,474,287368,575
Events in quadrant C2,434,270580,277
Events in quadrant D3,219,674535,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115002
B0223982
C0102332
D0127402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943170.343921%
B4943207041.877402%
C494350.101153%
D49431713.459438%

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 7035 4944 14 14 0.20% 0.28%
B 7035 4944 1870 1870 26.58% 37.82%
C 7035 4944 1 1 0.01% 0.02%
D 7035 4944 143 143 2.03% 2.89%

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 575133 4971.12 567 557 115.6
A 15 223 79289 681.17 567 557 115.6
A 13 248 43697 373.24 567 557 115.6
B 0 186 4658157 59038.96 419 409 78.9
B 5 255 72671 915.95 419 409 78.9
B 5 172 39596 496.71 419 409 78.9
C 15 214 210279 1682.53 542 543 124.7
C 10 34 86115 686.47 542 543 124.7
C 14 254 9358 70.71 542 543 124.7
D 13 171 455449 3485.06 545 531 130.5
D 1 52 217533 1662.42 545 531 130.5
D 1 47 166702 1273.01 545 531 130.5

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