ASTROSAT CZTI

Data Quality Report

Orbit 04284

Creation date: 2024-06-27T14:39:47.992279
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/AS1G05_240T01_9000000536_04284cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04284cztM0_level2_quad_clean.evt
Size (bytes)567,112,32057,608,640
Size540.8 MB 54.9 MB
Events in quadrant A3,577,864341,842
Events in quadrant B3,902,394348,988
Events in quadrant C2,712,681338,459
Events in quadrant D6,587,966307,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142062
B0155101
C0119701
D0236921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58292013.448276%
B58291252.144450%
C5829671.149425%
D58295529.469892%

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 7099 5829 71 71 1.00% 1.22%
B 7099 5829 7 7 0.10% 0.12%
C 7099 5829 1 1 0.01% 0.02%
D 7099 5829 387 387 5.45% 6.64%

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 0 199 360131 2426.23 725 709 148.1
A 8 15 216355 1455.69 725 709 148.1
A 0 50 93494 626.33 725 709 148.1
B 3 0 660434 4730.58 727 712 139.5
B 15 204 272504 1948.9 727 712 139.5
B 14 167 94030 669.14 727 712 139.5
C 7 174 5880 32.13 692 696 161.4
C 13 61 5608 30.44 692 696 161.4
C 10 21 2288 9.87 692 696 161.4
D 2 232 1773685 11045.43 676 657 160.5
D 11 132 1770792 11027.41 676 657 160.5
D 13 239 369125 2295.44 676 657 160.5

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