ASTROSAT CZTI

Data Quality Report

Orbit 34931

Creation date: 2022-03-15T07:58:55.207270
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/AS1A11_065T12_9000005004_34931cztM0_level2.evt modeM0/AS1A11_065T12_9000005004_34931cztM0_level2_quad_clean.evt
Size (bytes)482,647,68053,435,520
Size460.3 MB 51.0 MB
Events in quadrant A4,732,934314,921
Events in quadrant B2,900,060327,857
Events in quadrant C2,826,397323,168
Events in quadrant D3,817,776299,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175423
B0118862
C0113112
D0148242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50211653.286198%
B50211282.549293%
C5021791.573392%
D50211513.007369%

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 7084 5022 121 121 1.71% 2.41%
B 7084 5022 91 91 1.28% 1.81%
C 7084 5022 68 68 0.96% 1.35%
D 7084 5022 161 161 2.27% 3.21%

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 15 169 2437891 21154.28 571 560 115.2
A 10 83 62427 536.96 571 560 115.2
A 7 16 12379 102.58 571 560 115.2
B 5 172 381584 3507.8 573 558 108.6
B 0 190 69103 631.04 573 558 108.6
B 5 255 62211 567.59 573 558 108.6
C 0 10 334376 2516.61 566 569 132.6
C 15 214 210160 1580.13 566 569 132.6
C 8 111 62679 468.25 566 569 132.6
D 8 195 863868 6391.47 553 538 135.1
D 2 31 163718 1208.06 553 538 135.1
D 13 249 162971 1202.53 553 538 135.1

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