ASTROSAT CZTI

Data Quality Report

Orbit 21741

Creation date: 2024-06-27T18:31:42.104983
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/AS1A07_005T01_9000003224_21741cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21741cztM0_level2_quad_clean.evt
Size (bytes)582,606,720102,349,440
Size555.6 MB 97.6 MB
Events in quadrant A4,354,700669,388
Events in quadrant B3,567,789711,300
Events in quadrant C3,268,473664,230
Events in quadrant D6,035,941624,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169622
B0146202
C0135132
D0222342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61672774.491649%
B61671231.994487%
C6166881.427181%
D616674412.066169%

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 7507 6168 161 161 2.14% 2.61%
B 7507 6168 15 15 0.20% 0.24%
C 7506 6167 0 0 0.00% 0.00%
D 7506 6167 528 528 7.03% 8.56%

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 13 252 679419 4122.34 822 806 164.6
A 15 236 441175 2675.09 822 806 164.6
A 15 174 65975 395.88 822 806 164.6
B 3 64 88787 559.85 842 824 157.1
B 6 36 52787 330.72 842 824 157.1
B 0 230 41624 259.68 842 824 157.1
C 14 238 128337 679.25 803 811 187.7
C 13 61 5522 25.09 803 811 187.7
C 8 128 3819 16.02 803 811 187.7
D 1 52 1186550 6515.74 761 741 182.0
D 12 235 776275 4261.37 761 741 182.0
D 7 238 510446 2800.71 761 741 182.0

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