ASTROSAT CZTI

Data Quality Report

Orbit 44575

Creation date: 2024-06-27T23:04:07.682928
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_003T01_9000006002_44575cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44575cztM0_level2_quad_clean.evt
Size (bytes)506,819,520110,617,920
Size483.3 MB 105.5 MB
Events in quadrant A4,892,107774,000
Events in quadrant B3,159,848809,306
Events in quadrant C5,358,063647,970
Events in quadrant D4,861,225678,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199002
B0134562
C0201202
D0186862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63081422.251110%
B6308751.188966%
C6308106016.804058%
D63073034.804186%

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 7578 6308 15 15 0.20% 0.24%
B 7578 6308 8 8 0.11% 0.13%
C 7578 6308 784 784 10.35% 12.43%
D 7577 6307 254 254 3.35% 4.03%

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 1882488 11980.11 765 750 157.1
A 13 248 31692 196.99 765 750 157.1
A 3 137 8175 47.27 765 750 157.1
B 0 186 51948 345.0 767 745 148.4
B 5 172 48589 322.37 767 745 148.4
B 12 111 18488 119.55 767 745 148.4
C 15 208 2293562 14507.54 680 684 158.0
C 3 233 186083 1173.06 680 684 158.0
C 14 254 158662 999.56 680 684 158.0
D 13 174 818461 4456.71 732 711 183.5
D 1 52 520364 2832.09 732 711 183.5
D 2 249 355808 1935.27 732 711 183.5

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