ASTROSAT CZTI

Data Quality Report

Orbit 00900

Creation date: 2024-06-27T14:04:29.197882
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/AS1P01_161T05_9000000180_00900cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00900cztM0_level2_quad_clean.evt
Size (bytes)1,301,296,32072,959,040
Size1.2 GB 69.6 MB
Events in quadrant A8,567,643452,623
Events in quadrant B12,664,597381,267
Events in quadrant C9,465,985444,281
Events in quadrant D8,229,452422,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306250
B0429770
C0333010
D0296610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A729270.095996%
B7292139719.157981%
C7291170.233164%
D72911892.592237%

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 7972 7295 214 214 2.68% 2.93%
B 7972 7294 2050 2050 25.72% 28.11%
C 7971 7294 329 329 4.13% 4.51%
D 7971 7294 329 329 4.13% 4.51%

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 15 127 110692 206.56 2191 2211 525.2
A 14 170 27864 48.85 2191 2211 525.2
A 15 233 26554 46.35 2191 2211 525.2
B 3 0 4525787 9332.08 2071 2084 484.7
B 0 220 90862 183.14 2071 2084 484.7
B 15 22 59744 118.95 2071 2084 484.7
C 9 83 1074080 1818.48 2126 2209 589.4
C 3 111 27980 43.72 2126 2209 589.4
C 15 241 25316 39.2 2126 2209 589.4
D 2 16 126780 202.28 2091 2113 616.3
D 1 4 48586 75.4 2091 2113 616.3
D 13 169 46519 72.05 2091 2113 616.3

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