ASTROSAT CZTI

Data Quality Report

Orbit 20240121_A13_044T01_9000006034_level2

Creation date: 2024-01-25T12:47:43.639359
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/AS1A13_044T01_9000006034cztM0_level2.fits modeM0/AS1A13_044T01_9000006034cztM0_level2_quad_clean.evt
Size (bytes)715,167,360752,829,120
Size682.0 MB 718.0 MB
Events in quadrant A4,302,7204,617,985
Events in quadrant B4,087,7904,568,860
Events in quadrant C4,307,6884,400,491
Events in quadrant D3,463,0443,720,462

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02523800
B02009110
C01695600
D02975100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016280
B016280
C016280
D016280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8007922202.772262%
B8007933704.208344%
C800807220.901598%
D80080960111.989261%

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 90434 80079 0 0 0.00% 0.00%
B 90435 79881 0 0 0.00% 0.00%
C 90435 80077 0 0 0.00% 0.00%
D 90435 79979 0 0 0.00% 0.00%

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 15 236 3465 8.56 1119 1047 282.4
A 7 110 3424 8.42 1119 1047 282.4
A 0 29 3328 8.08 1119 1047 282.4
B 2 9 3766 12.97 1084 1034 210.6
B 2 8 3040 9.53 1084 1034 210.6
B 3 17 3001 9.34 1084 1034 210.6
C 1 81 3352 7.79 1139 1059 294.2
C 3 202 3295 7.6 1139 1059 294.2
C 1 80 3249 7.44 1139 1059 294.2
D 10 189 2647 6.35 999 908 274.0
D 7 3 2561 6.03 999 908 274.0
D 4 12 2515 5.86 999 908 274.0

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