ASTROSAT CZTI

Data Quality Report

Orbit 42964

Creation date: 2024-06-27T22:46:19.550786
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/AS1T05_145T01_9000005836_42964cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42964cztM0_level2_quad_clean.evt
Size (bytes)639,264,96093,260,160
Size609.7 MB 88.9 MB
Events in quadrant A3,889,655851,964
Events in quadrant B11,830,87248,059
Events in quadrant C2,918,064837,093
Events in quadrant D4,610,642713,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153202
B0389322
C0117772
D0173702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53241743.268219%
B5324494092.787378%
C532420.037566%
D53243656.855748%

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 7117 5325 127 127 1.78% 2.38%
B 7117 5325 4771 4771 67.04% 89.60%
C 7117 5325 0 0 0.00% 0.00%
D 7117 5324 336 336 4.72% 6.31%

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 586123 3511.14 693 672 166.7
A 15 237 582689 3490.54 693 672 166.7
A 15 222 23495 136.88 693 672 166.7
B 4 81 11173662 358096.12 142 139 31.2
B 4 171 84505 2703.81 142 139 31.2
B 3 112 5317 165.95 142 139 31.2
C 15 214 221044 1278.8 676 684 172.3
C 14 254 36524 207.99 676 684 172.3
C 3 233 12637 69.37 676 684 172.3
D 1 52 802524 4448.65 656 630 180.3
D 13 249 523472 2900.56 656 630 180.3
D 12 233 290707 1609.25 656 630 180.3

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