ASTROSAT CZTI

Data Quality Report

Orbit 33220

Creation date: 2024-06-27T20:46:14.423962
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_066T01_9000004772_33220cztM0_level2.evt modeM0/AS1T04_066T01_9000004772_33220cztM0_level2_quad_clean.evt
Size (bytes)545,947,20096,324,480
Size520.7 MB 91.9 MB
Events in quadrant A2,775,683671,217
Events in quadrant B3,608,769662,646
Events in quadrant C2,875,756641,368
Events in quadrant D6,933,592588,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112623
B0143542
C0113992
D0241432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5044100.198255%
B5044951.883426%
C5044661.308485%
D50444468.842189%

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 7107 5045 3 3 0.04% 0.06%
B 7107 5045 53 53 0.75% 1.05%
C 7107 5045 44 44 0.62% 0.87%
D 7107 5045 519 519 7.30% 10.29%

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 47 29437 208.04 703 694 138.2
A 14 254 16282 112.82 703 694 138.2
A 13 254 8528 56.7 703 694 138.2
B 5 172 262443 2066.34 686 673 126.7
B 4 170 156947 1233.58 686 673 126.7
B 0 219 153044 1202.77 686 673 126.7
C 0 10 182472 1219.83 654 662 149.0
C 1 23 55607 368.65 654 662 149.0
C 15 208 40104 264.63 654 662 149.0
D 8 195 3289574 18800.1 653 640 174.9
D 10 203 324989 1854.03 653 640 174.9
D 2 250 306870 1750.46 653 640 174.9

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