ASTROSAT CZTI

Data Quality Report

Orbit 29610

Creation date: 2024-06-27T20:06:01.439307
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/AS1T03_286T01_9000004268_29610cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29610cztM0_level2_quad_clean.evt
Size (bytes)809,864,640173,551,680
Size772.3 MB 165.5 MB
Events in quadrant A5,093,3681,148,652
Events in quadrant B5,236,7161,161,994
Events in quadrant C5,487,9661,105,543
Events in quadrant D7,961,2921,076,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226452
B0228242
C0234283
D0311692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110401321.195652%
B110401861.684783%
C110394734.284808%
D110394514.085515%

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 12450 11040 2 2 0.02% 0.02%
B 12450 11040 14 14 0.11% 0.13%
C 12449 11039 13 13 0.10% 0.12%
D 12449 11040 294 294 2.36% 2.66%

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 12 96 57814 215.13 1304 1276 262.8
A 13 254 18261 64.63 1304 1276 262.8
A 3 137 13309 45.79 1304 1276 262.8
B 0 229 55582 217.76 1295 1257 249.5
B 5 172 45985 179.29 1295 1257 249.5
B 12 111 31250 120.23 1295 1257 249.5
C 14 238 304538 1039.16 1247 1250 291.9
C 14 254 145513 494.29 1247 1250 291.9
C 10 22 143709 488.11 1247 1250 291.9
D 12 227 1055788 3527.82 1251 1214 298.9
D 8 195 715486 2389.43 1251 1214 298.9
D 7 238 597732 1995.51 1251 1214 298.9

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