ASTROSAT CZTI

Data Quality Report

Orbit 23335

Creation date: 2024-06-27T18:53:14.244848
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/AS1C05_002T03_9000003448_23335cztM0_level2.evt modeM0/AS1C05_002T03_9000003448_23335cztM0_level2_quad_clean.evt
Size (bytes)211,711,6809,547,200
Size201.9 MB 9.1 MB
Events in quadrant A1,182,29133,523
Events in quadrant B1,188,03733,780
Events in quadrant C1,268,98532,602
Events in quadrant D2,623,46531,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047531
B047911
C051091
D093191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114055594656039246
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2167140.646054%
B2167110.507614%
C2167401.845870%
D2167944.337794%

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 2167 2167 0 0 0.00% 0.00%
B 2167 2167 0 0 0.00% 0.00%
C 2167 2167 2 2 0.09% 0.09%
D 2167 2167 44 44 2.03% 2.03%

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 13 254 3479 50.72 306 300 62.7
A 0 226 2652 37.52 306 300 62.7
A 3 137 2478 34.75 306 300 62.7
B 12 111 6377 105.84 301 295 57.5
B 11 111 5692 93.91 301 295 57.5
B 14 111 4659 75.94 301 295 57.5
C 10 9 54485 791.77 293 295 68.4
C 14 238 47798 694.07 293 295 68.4
C 7 247 9771 138.45 293 295 68.4
D 7 223 1249567 16860.92 297 287 74.1
D 1 52 167596 2258.09 297 287 74.1
D 12 233 50154 673.03 297 287 74.1

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