ASTROSAT CZTI

Data Quality Report

Orbit 04687

Creation date: 2024-06-27T14:45:39.376356
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/AS1G05_235T01_9000000590_04687cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04687cztM0_level2_quad_clean.evt
Size (bytes)520,012,80074,989,440
Size495.9 MB 71.5 MB
Events in quadrant A3,021,379475,870
Events in quadrant B3,355,172475,066
Events in quadrant C3,985,405450,981
Events in quadrant D4,960,144429,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132573
B0143542
C0163232
D0190652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280641.019108%
B62801492.372611%
C62805378.550955%
D62805338.487261%

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 7465 6281 9 9 0.12% 0.14%
B 7465 6281 54 54 0.72% 0.86%
C 7465 6281 495 495 6.63% 7.88%
D 7465 6281 479 479 6.42% 7.63%

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 50 72053 468.12 742 726 152.4
A 8 15 54293 351.56 742 726 152.4
A 3 1 24529 156.22 742 726 152.4
B 10 16 285590 2010.63 747 732 141.7
B 15 204 106843 748.97 747 732 141.7
B 4 48 21369 145.66 747 732 141.7
C 14 48 1216162 7398.35 706 709 164.3
C 9 247 7815 43.25 706 709 164.3
C 13 61 5769 30.8 706 709 164.3
D 13 235 1815328 10787.51 693 673 168.2
D 2 136 128835 761.88 693 673 168.2
D 13 25 81538 480.71 693 673 168.2

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