ASTROSAT CZTI

Data Quality Report

Orbit 33649

Creation date: 2024-06-27T20:51:04.843500
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_076T01_9000004810_33649cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33649cztM0_level2_quad_clean.evt
Size (bytes)599,126,40059,097,600
Size571.4 MB 56.4 MB
Events in quadrant A5,038,592349,927
Events in quadrant B4,453,370347,648
Events in quadrant C3,783,530353,962
Events in quadrant D4,484,993340,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186063
B0168192
C0147002
D0173962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568861810.864979%
B56885179.089311%
C5688991.740506%
D56881292.267932%

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 7241 5689 509 509 7.03% 8.95%
B 7241 5688 437 437 6.04% 7.68%
C 7241 5689 79 79 1.09% 1.39%
D 7241 5689 116 116 1.60% 2.04%

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 1818824 13561.15 659 645 134.1
A 15 237 564043 4202.19 659 645 134.1
A 7 16 84690 626.86 659 645 134.1
B 5 172 1655548 13089.82 656 637 126.4
B 15 222 50306 392.87 656 637 126.4
B 0 229 35372 274.74 656 637 126.4
C 3 233 639844 4192.86 658 663 152.4
C 15 214 265205 1735.33 658 663 152.4
C 0 10 224012 1465.11 658 663 152.4
D 8 195 1014705 5746.66 655 641 176.5
D 7 223 161680 912.6 655 641 176.5
D 2 250 157430 888.52 655 641 176.5

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