ASTROSAT CZTI

Data Quality Report

Orbit 37533

Creation date: 2024-06-27T21:41:09.314027
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/AS1A09_061T01_9000005330_37533cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37533cztM0_level2_quad_clean.evt
Size (bytes)2,910,545,280313,729,920
Size2.7 GB 299.2 MB
Events in quadrant A15,908,0101,987,179
Events in quadrant B16,306,6281,999,858
Events in quadrant C15,521,2991,967,988
Events in quadrant D38,491,8571,583,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0644117
B0661826
C0629456
D01334596

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285301790.627410%
B285306122.145110%
C285302480.869260%
D28530909231.868209%

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 38023 28536 124 124 0.33% 0.43%
B 38023 28536 429 429 1.13% 1.50%
C 38023 28536 222 222 0.58% 0.78%
D 38022 28534 9026 9026 23.74% 31.63%

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 1446996 2144.28 3317 3245 673.3
A 15 222 828282 1225.36 3317 3245 673.3
A 9 143 286372 420.5 3317 3245 673.3
B 5 172 1653265 2639.47 3299 3216 625.1
B 0 213 416448 661.02 3299 3216 625.1
B 0 229 353864 560.91 3299 3216 625.1
C 15 214 1224832 1611.37 3241 3262 758.1
C 14 254 1194960 1571.96 3241 3262 758.1
C 0 10 272819 355.57 3241 3262 758.1
D 12 227 19377579 29326.9 2691 2617 660.7
D 12 233 3565842 5393.47 2691 2617 660.7
D 2 249 2466908 3730.07 2691 2617 660.7

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