ASTROSAT CZTI

Data Quality Report

Orbit 33741

Creation date: 2024-06-27T20:52:00.367097
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_086T01_9000004816_33741cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33741cztM0_level2_quad_clean.evt
Size (bytes)517,835,52066,899,520
Size493.8 MB 63.8 MB
Events in quadrant A2,782,621431,070
Events in quadrant B3,878,373419,858
Events in quadrant C3,184,009432,081
Events in quadrant D5,492,252384,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115382
B0150371
C0127151
D0198041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5110440.861057%
B51102765.401174%
C51101042.035225%
D511061311.996086%

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 7142 5111 28 28 0.39% 0.55%
B 7142 5111 224 224 3.14% 4.38%
C 7142 5111 75 75 1.05% 1.47%
D 7142 5111 590 590 8.26% 11.54%

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 14 4 97237 715.08 686 676 135.0
A 15 169 14179 100.0 686 676 135.0
A 10 83 10561 73.2 686 676 135.0
B 5 172 776753 6236.53 673 657 124.4
B 5 255 128013 1023.4 673 657 124.4
B 12 1 61517 489.06 673 657 124.4
C 15 214 223625 1443.82 676 683 154.4
C 0 10 191207 1233.88 676 683 154.4
C 9 187 91298 586.84 676 683 154.4
D 2 250 1228075 7725.96 649 633 158.9
D 8 195 858864 5402.01 649 633 158.9
D 1 47 244807 1536.92 649 633 158.9

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