ASTROSAT CZTI

Data Quality Report

Orbit 00158

Creation date: 2024-06-27T13:57:10.404711
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/AS1P01_120T01_9000000006_00158cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00158cztM0_level2_quad_clean.evt
Size (bytes)860,152,32079,600,320
Size820.3 MB 75.9 MB
Events in quadrant A6,417,321505,960
Events in quadrant B6,575,063523,100
Events in quadrant C6,052,466517,264
Events in quadrant D6,656,370496,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0171

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02283774
B02331488
C02180780
D023655130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5256110.209285%
B5256170.323440%
C525530.057088%
D5252741.408987%

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 6850 5260 170 170 2.48% 3.23%
B 6850 5260 186 186 2.72% 3.54%
C 6851 5261 63 63 0.92% 1.20%
D 6849 5258 368 368 5.37% 7.00%

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 13 164 36682 98.78 1629 1617 355.0
A 15 184 22674 59.32 1629 1617 355.0
A 14 201 13986 34.84 1629 1617 355.0
B 10 199 106588 275.4 1650 1666 381.0
B 5 216 45505 115.07 1650 1666 381.0
B 5 47 30178 74.84 1650 1666 381.0
C 0 188 30156 67.85 1513 1574 421.3
C 0 202 22392 49.42 1513 1574 421.3
C 0 218 21525 47.36 1513 1574 421.3
D 10 202 283468 637.1 1475 1522 442.5
D 4 114 166523 372.85 1475 1522 442.5
D 7 67 137385 307.01 1475 1522 442.5

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