ASTROSAT CZTI

Data Quality Report

Orbit 39326

Creation date: 2024-06-27T22:03:16.288897
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/AS1A12_061T07_9000005468_39326cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39326cztM0_level2_quad_clean.evt
Size (bytes)388,324,80089,737,920
Size370.3 MB 85.6 MB
Events in quadrant A2,775,119611,736
Events in quadrant B3,013,779617,633
Events in quadrant C2,739,512589,812
Events in quadrant D5,425,744519,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116043
B0125192
C0114722
D0199012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5407140.258924%
B54071152.126873%
C5407140.258924%
D54074237.823192%

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 7079 5408 11 11 0.16% 0.20%
B 7079 5408 80 80 1.13% 1.48%
C 7079 5408 6 6 0.08% 0.11%
D 7079 5408 401 401 5.66% 7.41%

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 405868 3322.55 601 589 122.0
A 13 248 32870 264.65 601 589 122.0
A 15 222 10170 78.55 601 589 122.0
B 5 172 606668 5157.92 599 582 117.5
B 5 255 22482 186.37 599 582 117.5
B 0 213 21536 178.32 599 582 117.5
C 15 214 247343 1778.77 591 595 138.7
C 14 254 92885 665.31 591 595 138.7
C 9 187 59203 422.5 591 595 138.7
D 12 235 2440192 17322.9 571 556 140.8
D 5 222 325592 2307.95 571 556 140.8
D 13 249 215378 1525.37 571 556 140.8

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