ASTROSAT CZTI

Data Quality Report

Orbit 34222

Creation date: 2022-01-26T10:20:25.969914
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/AS1T05_003T01_9000004886_34222cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34222cztM0_level2_quad_clean.evt
Size (bytes)555,359,04066,867,840
Size529.6 MB 63.8 MB
Events in quadrant A3,368,641419,217
Events in quadrant B6,516,905397,853
Events in quadrant C2,861,987440,659
Events in quadrant D3,728,586411,023

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133873
B0229162
C0113422
D0144372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5069350.690471%
B5069109721.641349%
C5069881.736043%
D50692384.695206%

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 7041 5070 17 17 0.24% 0.34%
B 7041 5070 954 954 13.55% 18.82%
C 7041 5070 60 60 0.85% 1.18%
D 7041 5070 198 198 2.81% 3.91%

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 47 947040 7897.95 600 588 119.8
A 9 143 48318 398.3 600 588 119.8
A 10 83 22360 181.68 600 588 119.8
B 5 31 2849748 25881.66 575 560 110.1
B 5 15 1012784 9194.91 575 560 110.1
B 5 172 184240 1668.53 575 560 110.1
C 15 214 219937 1632.8 587 592 134.3
C 0 10 196164 1455.83 587 592 134.3
C 4 254 111918 828.71 587 592 134.3
D 8 195 670020 4692.63 580 564 142.7
D 7 80 650969 4559.09 580 564 142.7
D 10 118 55325 383.85 580 564 142.7

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