ASTROSAT CZTI

Data Quality Report

Orbit 23486

Creation date: 2024-06-27T18:55:02.081552
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/AS1A07_148T02_9000003474_23486cztM0_level2.evt modeM0/AS1A07_148T02_9000003474_23486cztM0_level2_quad_clean.evt
Size (bytes)264,401,28026,058,240
Size252.2 MB 24.9 MB
Events in quadrant A1,608,549144,127
Events in quadrant B1,815,892144,473
Events in quadrant C1,661,642141,007
Events in quadrant D2,701,109130,256

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068311
B074861
C069581
D0102191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32151213.763608%
B32151645.101089%
C32151474.572317%
D321541612.939347%

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 3425 3215 0 0 0.00% 0.00%
B 3425 3215 11 11 0.32% 0.34%
C 3425 3215 2 2 0.06% 0.06%
D 3425 3215 250 250 7.30% 7.78%

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 5525 59.63 416 407 85.8
A 3 137 3834 39.93 416 407 85.8
A 0 226 3758 39.05 416 407 85.8
B 0 189 144809 1761.19 407 395 82.0
B 15 32 36247 437.23 407 395 82.0
B 0 245 23989 287.74 407 395 82.0
C 14 238 61273 636.17 395 398 95.7
C 7 247 47556 492.82 395 398 95.7
C 0 239 5100 49.14 395 398 95.7
D 1 52 1199051 12411.46 387 375 96.6
D 2 234 12706 127.68 387 375 96.6
D 2 153 10390 103.7 387 375 96.6

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