ASTROSAT CZTI

Data Quality Report

Orbit 12254

Creation date: 2024-06-27T16:24:31.568549
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/AS1G08_006T04_9000001812_12254cztM0_level2.evt modeM0/AS1G08_006T04_9000001812_12254cztM0_level2_quad_clean.evt
Size (bytes)579,107,520129,242,880
Size552.3 MB 123.3 MB
Events in quadrant A3,812,476872,938
Events in quadrant B5,866,248862,501
Events in quadrant C3,911,066855,504
Events in quadrant D3,470,063831,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158393
B0223582
C0164142
D0152492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70671091.542380%
B70673164.471487%
C70671632.306495%
D7067761.075421%

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 8743 7070 16 16 0.18% 0.23%
B 8743 7070 136 136 1.56% 1.92%
C 8743 7070 100 100 1.14% 1.41%
D 8743 7070 33 33 0.38% 0.47%

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 5 16 166971 988.12 829 809 168.2
A 1 162 110154 650.25 829 809 168.2
A 1 178 66430 390.23 829 809 168.2
B 4 206 1745196 11291.4 820 800 154.5
B 4 239 587566 3798.11 820 800 154.5
B 11 51 114339 734.93 820 800 154.5
C 15 208 758649 4138.14 798 803 183.1
C 4 175 18100 94.45 798 803 183.1
C 1 16 11214 56.85 798 803 183.1
D 12 221 132405 678.31 800 774 194.1
D 1 52 95848 489.93 800 774 194.1
D 13 104 52473 266.41 800 774 194.1

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