ASTROSAT CZTI

Data Quality Report

Orbit 18138

Creation date: 2024-06-27T17:45:46.887251
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/AS1A05_084T04_9000002694_18138cztM0_level2.evt modeM0/AS1A05_084T04_9000002694_18138cztM0_level2_quad_clean.evt
Size (bytes)547,931,520106,188,480
Size522.5 MB 101.3 MB
Events in quadrant A3,262,845723,485
Events in quadrant B3,503,276717,093
Events in quadrant C3,244,003683,025
Events in quadrant D6,141,669636,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137451
B0144541
C0137421
D0227871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529671.026191%
B6529971.485679%
C6530671.026034%
D65306069.280245%

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 7679 6530 0 0 0.00% 0.00%
B 7679 6530 15 15 0.20% 0.23%
C 7680 6531 0 0 0.00% 0.00%
D 7680 6531 516 516 6.72% 7.90%

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 0 226 7644 40.17 843 826 169.7
A 15 174 7057 36.71 843 826 169.7
A 12 194 6371 32.67 843 826 169.7
B 7 220 106469 671.28 832 815 157.4
B 0 197 37688 234.28 832 815 157.4
B 5 172 32008 198.19 832 815 157.4
C 14 238 122871 663.58 787 792 184.0
C 3 233 36097 191.91 787 792 184.0
C 5 218 10386 52.15 787 792 184.0
D 7 238 1297528 6767.54 782 761 191.6
D 12 110 1259573 6569.47 782 761 191.6
D 11 176 296756 1544.73 782 761 191.6

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