ASTROSAT CZTI

Data Quality Report

Orbit 38735

Creation date: 2024-06-27T21:55:45.304783
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_054T01_9000005392_38735cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38735cztM0_level2_quad_clean.evt
Size (bytes)529,470,72086,019,840
Size504.9 MB 82.0 MB
Events in quadrant A3,088,737622,908
Events in quadrant B2,683,226656,727
Events in quadrant C3,019,950609,750
Events in quadrant D10,399,822347,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124063
B0114122
C0121362
D0344982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52471422.706308%
B5247470.895750%
C52471122.134553%
D5247246947.055460%

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 7129 5248 102 102 1.43% 1.94%
B 7129 5248 21 21 0.29% 0.40%
C 7129 5248 101 101 1.42% 1.92%
D 7129 5248 2504 2504 35.12% 47.71%

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 384298 3139.97 598 586 122.2
A 0 8 328830 2686.07 598 586 122.2
A 9 143 40274 324.77 598 586 122.2
B 4 171 164286 1389.57 605 589 117.8
B 5 184 93654 790.0 605 589 117.8
B 4 251 27718 230.29 605 589 117.8
C 14 254 476660 3452.91 587 592 137.9
C 15 214 214547 1551.81 587 592 137.9
C 0 10 28882 205.18 587 592 137.9
D 2 16 7054968 55020.86 516 500 128.2
D 12 235 516528 4024.73 516 500 128.2
D 2 249 334747 2606.94 516 500 128.2

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