ASTROSAT CZTI

Data Quality Report

Orbit 38928

Creation date: 2024-06-27T21:58:16.458633
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_064T01_9000005416_38928cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38928cztM0_level2_quad_clean.evt
Size (bytes)327,965,76085,959,360
Size312.8 MB 82.0 MB
Events in quadrant A2,655,928575,524
Events in quadrant B2,594,380586,767
Events in quadrant C2,404,411577,334
Events in quadrant D4,086,852505,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111473
B0111782
C0104202
D0156692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5114120.234650%
B5114931.818537%
C5114160.312867%
D51143366.570199%

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 7027 5115 8 8 0.11% 0.16%
B 7027 5115 73 73 1.04% 1.43%
C 7027 5115 10 10 0.14% 0.20%
D 7027 5115 335 335 4.77% 6.55%

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 10 83 398392 3516.11 554 542 113.2
A 13 248 95832 842.15 554 542 113.2
A 13 6 10480 87.83 554 542 113.2
B 5 172 238141 2245.14 551 535 105.8
B 0 190 70138 657.68 551 535 105.8
B 0 155 53709 502.44 551 535 105.8
C 15 214 210421 1651.23 547 551 127.1
C 0 10 48994 381.14 547 551 127.1
C 14 67 5923 42.27 547 551 127.1
D 2 250 1003565 7840.27 528 513 127.9
D 12 227 372222 2905.43 528 513 127.9
D 13 249 157283 1225.38 528 513 127.9

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