ASTROSAT CZTI

Data Quality Report

Orbit 39403

Creation date: 2024-06-27T22:04:07.831011
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/AS1A12_018T01_9000005470_39403cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39403cztM0_level2_quad_clean.evt
Size (bytes)466,436,16089,648,640
Size444.8 MB 85.5 MB
Events in quadrant A2,981,347634,999
Events in quadrant B2,338,142665,371
Events in quadrant C2,871,353623,714
Events in quadrant D8,672,905428,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120313
B0104112
C0118122
D0293492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5177440.849913%
B517750.096581%
C5177240.463589%
D5177165331.929689%

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 7271 5178 33 33 0.45% 0.64%
B 7271 5178 0 0 0.00% 0.00%
C 7271 5178 24 24 0.33% 0.46%
D 7271 5178 1703 1703 23.42% 32.89%

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 10 83 419129 3524.8 588 578 118.7
A 13 248 223530 1877.58 588 578 118.7
A 2 79 55371 461.44 588 578 118.7
B 12 111 14046 119.99 592 578 112.2
B 11 111 12460 105.86 592 578 112.2
B 14 111 12417 105.48 592 578 112.2
C 14 254 393461 2981.41 571 575 131.8
C 15 214 217984 1649.81 571 575 131.8
C 9 187 25602 189.92 571 575 131.8
D 12 235 6293800 50928.79 504 490 123.6
D 2 249 244619 1975.62 504 490 123.6
D 13 249 129406 1043.26 504 490 123.6

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