ASTROSAT CZTI

Data Quality Report

Orbit 40093

Creation date: 2024-06-27T22:12:15.746266
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_004T01_9000005520_40093cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40093cztM0_level2_quad_clean.evt
Size (bytes)485,965,44088,683,840
Size463.5 MB 84.6 MB
Events in quadrant A3,127,747614,121
Events in quadrant B2,652,100635,525
Events in quadrant C7,339,586508,270
Events in quadrant D4,430,152531,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129143
B0116512
C0257232
D0172042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5656721.272984%
B565690.159123%
C5656123521.835219%
D56564207.425743%

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 7238 5657 36 36 0.50% 0.64%
B 7238 5657 2 2 0.03% 0.04%
C 7238 5657 1019 1019 14.08% 18.01%
D 7238 5657 335 335 4.63% 5.92%

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 492147 3856.72 621 609 127.4
A 13 248 148306 1158.86 621 609 127.4
A 2 79 59174 459.51 621 609 127.4
B 0 189 127751 1041.29 623 604 122.1
B 4 171 38601 311.18 623 604 122.1
B 12 111 15460 121.67 623 604 122.1
C 9 187 4727202 35514.46 570 572 133.1
C 15 214 217640 1630.98 570 572 133.1
C 3 233 88082 657.52 570 572 133.1
D 12 227 774475 5302.44 592 576 146.0
D 13 249 443940 3037.75 592 576 146.0
D 12 218 429275 2937.27 592 576 146.0

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