ASTROSAT CZTI

Data Quality Report

Orbit 39320

Creation date: 2024-06-27T22:03:12.180321
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_061T07_9000005468_39320cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39320cztM0_level2_quad_clean.evt
Size (bytes)477,239,04088,686,720
Size455.1 MB 84.6 MB
Events in quadrant A2,925,744628,091
Events in quadrant B2,909,396633,006
Events in quadrant C2,779,503618,774
Events in quadrant D8,623,141420,015

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119993
B0123302
C0115902
D0295332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5509250.453803%
B55091122.033037%
C5509280.508259%
D5509180132.691959%

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 7091 5510 12 12 0.17% 0.22%
B 7091 5510 66 66 0.93% 1.20%
C 7091 5510 24 24 0.34% 0.44%
D 7091 5510 1606 1606 22.65% 29.15%

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 434414 3431.11 620 609 126.4
A 13 248 56017 438.24 620 609 126.4
A 15 222 16573 126.26 620 609 126.4
B 0 183 234389 1983.67 610 594 117.9
B 5 184 186585 1578.07 610 594 117.9
B 5 255 41677 348.58 610 594 117.9
C 15 214 253053 1784.78 603 607 141.4
C 14 254 119524 840.74 603 607 141.4
C 9 187 38796 269.99 603 607 141.4
D 12 235 4845058 37396.01 529 514 129.5
D 12 227 1044062 8055.36 529 514 129.5
D 5 222 422457 3257.06 529 514 129.5

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