ASTROSAT CZTI

Data Quality Report

Orbit 06826

Creation date: 2024-06-27T15:12:04.803787
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/AS1A02_174T04_9000000938_06826cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06826cztM0_level2_quad_clean.evt
Size (bytes)2,735,910,720170,418,240
Size2.5 GB 162.5 MB
Events in quadrant A19,470,707596,044
Events in quadrant B19,574,978604,994
Events in quadrant C19,037,752593,254
Events in quadrant D22,026,359570,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323
B0300
C0301
D0322

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086022322
B086579297
C085232319
D093801424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08333
B08333
C08333
D08344

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A406794201.032474%
B406855921.455082%
C406782810.690791%
D406747011.723460%

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 44422 40703 46 46 0.10% 0.11%
B 44422 40711 62 62 0.14% 0.15%
C 44422 40700 35 35 0.08% 0.09%
D 44422 40697 353 353 0.79% 0.87%

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 8 15 1118692 1153.93 4727 4618 965.5
A 13 248 74039 71.9 4727 4618 965.5
A 8 4 60412 57.79 4727 4618 965.5
B 0 228 453114 495.12 4762 4645 905.8
B 15 204 203112 219.11 4762 4645 905.8
B 0 214 156262 167.39 4762 4645 905.8
C 12 16 475549 445.85 4583 4604 1056.3
C 9 247 461164 432.23 4583 4604 1056.3
C 3 9 80641 71.98 4583 4604 1056.3
D 8 195 2250556 2006.69 4564 4418 1119.3
D 14 34 1112224 989.71 4564 4418 1119.3
D 2 136 619312 549.34 4564 4418 1119.3

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