ASTROSAT CZTI

Data Quality Report

Orbit 23430

Creation date: 2024-06-27T18:54:19.441850
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_138T02_9000003464_23430cztM0_level2.evt modeM0/AS1A07_138T02_9000003464_23430cztM0_level2_quad_clean.evt
Size (bytes)343,978,56064,437,120
Size328.0 MB 61.5 MB
Events in quadrant A2,358,113402,226
Events in quadrant B2,507,805409,247
Events in quadrant C2,491,261393,185
Events in quadrant D2,709,723385,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105261
B0109361
C0107561
D0118441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138140.272480%
B5139440.856198%
C5139591.148083%
D51391272.471298%

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 5748 5138 0 0 0.00% 0.00%
B 5749 5139 1 1 0.02% 0.02%
C 5749 5139 0 0 0.00% 0.00%
D 5749 5140 108 108 1.88% 2.10%

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 13 254 7777 57.87 610 599 124.0
A 3 137 5459 39.19 610 599 124.0
A 0 226 5244 37.45 610 599 124.0
B 0 189 58903 494.09 608 592 118.0
B 0 190 20435 168.14 608 592 118.0
B 5 172 15863 129.4 608 592 118.0
C 10 9 115401 826.26 584 587 139.0
C 14 238 93606 669.41 584 587 139.0
C 7 247 5057 32.17 584 587 139.0
D 1 52 367964 2568.9 583 566 143.0
D 9 65 25916 177.25 583 566 143.0
D 12 227 24953 170.52 583 566 143.0

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