ASTROSAT CZTI

Data Quality Report

Orbit 42444

Creation date: 2024-06-27T22:40:15.064719
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/AS1C07_001T10_9000005806_42444cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42444cztM0_level2_quad_clean.evt
Size (bytes)386,130,24081,866,880
Size368.2 MB 78.1 MB
Events in quadrant A2,835,662604,969
Events in quadrant B5,829,427404,870
Events in quadrant C2,370,147579,021
Events in quadrant D2,865,876537,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112922
B0206262
C0101702
D0117782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5026190.378034%
B5026177735.356148%
C502640.079586%
D5026761.512137%

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 7028 5027 7 7 0.10% 0.14%
B 7028 5027 1631 1631 23.21% 32.44%
C 7028 5027 1 1 0.01% 0.02%
D 7028 5027 63 63 0.90% 1.25%

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 561361 4803.43 571 561 116.7
A 15 223 24005 200.81 571 561 116.7
A 14 223 23272 194.53 571 561 116.7
B 0 186 4007621 47027.34 440 428 85.2
B 5 172 31212 361.27 440 428 85.2
B 3 112 27215 314.37 440 428 85.2
C 15 214 215561 1718.87 544 546 125.1
C 10 34 17293 133.88 544 546 125.1
C 5 250 5394 38.76 544 546 125.1
D 1 47 134686 1002.03 550 535 133.9
D 1 52 126279 939.23 550 535 133.9
D 2 16 118700 882.62 550 535 133.9

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