ASTROSAT CZTI

Data Quality Report

Orbit 30174

Creation date: 2024-06-27T20:11:49.652334
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/AS1A10_021T06_9000004338_30174cztM0_level2.evt modeM0/AS1A10_021T06_9000004338_30174cztM0_level2_quad_clean.evt
Size (bytes)302,037,12057,660,480
Size288.0 MB 55.0 MB
Events in quadrant A1,839,241383,289
Events in quadrant B2,520,999382,975
Events in quadrant C2,522,153364,946
Events in quadrant D2,027,170367,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077890
B0104110
C099830
D082750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3486441.262192%
B3487140.401491%
C3487561.605965%
D3487571.634643%

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 3486 3486 27 27 0.77% 0.77%
B 3487 3487 1 1 0.03% 0.03%
C 3487 3487 0 0 0.00% 0.00%
D 3487 3487 54 54 1.55% 1.55%

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 13 257486 3052.8 410 400 84.2
A 13 254 5777 63.85 410 400 84.2
A 3 137 4215 45.3 410 400 84.2
B 6 159 915330 11527.27 402 391 79.4
B 0 190 21765 269.29 402 391 79.4
B 12 111 9547 115.36 402 391 79.4
C 3 233 899539 9574.2 392 394 93.9
C 14 238 63302 669.85 392 394 93.9
C 15 208 18959 197.68 392 394 93.9
D 1 52 345649 3541.11 398 389 97.5
D 8 195 80145 818.01 398 389 97.5
D 2 120 37493 380.55 398 389 97.5

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