ASTROSAT CZTI

Data Quality Report

Orbit 42500

Creation date: 2024-06-27T22:40:53.982235
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_42500cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42500cztM0_level2_quad_clean.evt
Size (bytes)315,624,96088,666,560
Size301.0 MB 84.6 MB
Events in quadrant A3,001,599589,918
Events in quadrant B2,441,479597,773
Events in quadrant C2,600,612579,356
Events in quadrant D3,212,366533,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122992
B0113442
C0113472
D0136532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5483350.638337%
B5483180.328287%
C548330.054715%
D54831532.790443%

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 7215 5484 22 22 0.30% 0.40%
B 7215 5484 10 10 0.14% 0.18%
C 7215 5484 0 0 0.00% 0.00%
D 7215 5484 127 127 1.76% 2.32%

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 532187 4460.01 581 570 119.2
A 13 248 110961 926.13 581 570 119.2
A 12 189 91674 764.32 581 570 119.2
B 0 245 55268 495.83 574 559 110.3
B 5 172 46628 417.52 574 559 110.3
B 10 246 33979 302.89 574 559 110.3
C 15 214 231052 1735.84 564 566 132.8
C 0 239 140795 1056.09 564 566 132.8
C 9 54 14277 103.26 564 566 132.8
D 1 47 386235 2818.15 560 544 136.9
D 12 233 195014 1420.95 560 544 136.9
D 12 6 158823 1156.51 560 544 136.9

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