ASTROSAT CZTI

Data Quality Report

Orbit 20190820_A05_025T04_9000003110_level2

Creation date: 2025-12-03T05:13:11.784908
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/AS1A05_025T04_9000003110cztM0_level2.fits modeM0/AS1A05_025T04_9000003110cztM0_level2_quad_clean.evt
Size (bytes)395,821,440380,675,520
Size377.5 MB 363.0 MB
Events in quadrant A2,408,2062,273,159
Events in quadrant B2,307,6742,276,936
Events in quadrant C2,362,4982,152,582
Events in quadrant D2,026,0381,943,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08520
B08520
C08520
D08520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0861670
B0914650
C0859870
D01074570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A419915911.407444%
B419918492.021862%
C419917561.800386%
D4199118564.419995%

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 46450 41989 0 0 0.00% 0.00%
B 46450 41985 0 0 0.00% 0.00%
C 46450 41991 0 0 0.00% 0.00%
D 46450 41986 0 0 0.00% 0.00%

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 0 29 2376 11.6 625 588 154.1
A 7 110 1995 9.13 625 588 154.1
A 9 19 1858 8.24 625 588 154.1
B 2 9 1827 10.15 610 581 122.8
B 3 17 1579 8.13 610 581 122.8
B 2 8 1575 8.1 610 581 122.8
C 3 234 1769 7.35 622 578 162.1
C 12 241 1760 7.29 622 578 162.1
C 1 81 1751 7.23 622 578 162.1
D 7 3 1478 6.11 578 524 156.2
D 6 67 1403 5.63 578 524 156.2
D 6 231 1382 5.49 578 524 156.2

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