ASTROSAT CZTI

Data Quality Report

Orbit 34206

Creation date: 2022-01-25T08:22:02.463873
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/AS1T04_086T01_9000004884_34206cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34206cztM0_level2_quad_clean.evt
Size (bytes)677,836,80051,027,840
Size646.4 MB 48.7 MB
Events in quadrant A2,669,455317,169
Events in quadrant B7,270,954272,839
Events in quadrant C3,000,510331,582
Events in quadrant D7,244,227265,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108803
B0250512
C0116442
D0250312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085130.255654%
B5085168633.156342%
C5085841.651917%
D5085130625.683382%

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 7237 5086 3 3 0.04% 0.06%
B 7237 5086 1348 1348 18.63% 26.50%
C 7237 5086 59 59 0.82% 1.16%
D 7237 5086 1162 1162 16.06% 22.85%

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 163358 1298.53 631 621 125.3
A 9 143 27477 214.29 631 621 125.3
A 10 83 21728 168.42 631 621 125.3
B 5 31 2996484 27426.36 577 564 109.2
B 5 15 1128598 10326.67 577 564 109.2
B 5 172 404302 3696.05 577 564 109.2
C 0 10 313314 2205.2 620 626 141.8
C 15 214 237087 1667.61 620 626 141.8
C 15 159 14573 98.36 620 626 141.8
D 2 250 2379819 17307.38 565 551 137.5
D 12 217 961372 6989.25 565 551 137.5
D 8 195 866786 6301.21 565 551 137.5

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