ASTROSAT CZTI

Data Quality Report

Orbit 43577

Creation date: 2024-06-27T22:53:22.891987
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/AS1A10_094T26_9000005882_43577cztM0_level2.fits modeM0/AS1A10_094T26_9000005882_43577cztM0_level2_quad_clean.evt
Size (bytes)1,084,763,52071,784,000
Size1.0 GB 68.5 MB
Events in quadrant A5,781,030678,507
Events in quadrant B7,088,716692,616
Events in quadrant C15,547,674200,363
Events in quadrant D11,269,835173,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214351
B0252821
C0503141
D0377031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60474587.574004%
B604880913.376323%
C6048598999.024471%
D6048602399.586640%

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 7112 6048 299 299 4.20% 4.94%
B 7113 6049 516 516 7.25% 8.53%
C 7112 6047 5833 5833 82.02% 96.46%
D 7112 6047 2418 2418 34.00% 39.99%

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 15 222 1231396 8954.41 661 648 137.4
A 10 83 718286 5221.23 661 648 137.4
A 10 99 658561 4786.7 661 648 137.4
B 4 206 3739877 29568.4 662 643 126.5
B 0 230 167424 1318.84 662 643 126.5
B 0 219 129526 1019.16 662 643 126.5
C 15 174 8555317 173446.3 204 206 49.3
C 15 142 4394520 89090.31 204 206 49.3
C 15 158 1039044 21061.4 204 206 49.3
D 4 212 4440760 69635.07 202 195 63.8
D 4 216 2062250 32336.28 202 195 63.8
D 14 210 525076 8230.96 202 195 63.8

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