ASTROSAT CZTI

Data Quality Report

Orbit 42049

Creation date: 2024-06-27T22:36:10.992140
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/AS1A12_037T01_9000005736_42049cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42049cztM0_level2_quad_clean.evt
Size (bytes)204,940,80039,265,920
Size195.4 MB 37.4 MB
Events in quadrant A3,262,377235,234
Events in quadrant B1,248,227273,763
Events in quadrant C1,135,945262,508
Events in quadrant D1,740,639235,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114481
B055331
C051021
D068811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A253547718.816568%
B2535371.459566%
C253510.039448%
D25361174.613565%

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 2535 2534 357 357 14.08% 14.09%
B 2535 2535 41 41 1.62% 1.62%
C 2535 2535 0 0 0.00% 0.00%
D 2536 2536 104 104 4.10% 4.10%

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 15 223 1962926 37507.89 246 241 52.3
A 10 83 260663 4976.79 246 241 52.3
A 12 189 72671 1384.17 246 241 52.3
B 5 32 121405 2280.79 262 256 53.1
B 0 156 34414 643.07 262 256 53.1
B 5 255 20864 387.97 262 256 53.1
C 15 214 110926 1767.31 260 261 62.6
C 12 249 8855 137.25 260 261 62.6
C 13 61 1803 24.63 260 261 62.6
D 1 52 557930 8466.28 259 250 65.9
D 5 32 55492 838.64 259 250 65.9
D 13 249 41983 633.56 259 250 65.9

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