ASTROSAT CZTI

Data Quality Report

Orbit 39451

Creation date: 2024-06-27T22:04:43.842248
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_025T17_9000005476_39451cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39451cztM0_level2_quad_clean.evt
Size (bytes)495,040,32089,208,000
Size472.1 MB 85.1 MB
Events in quadrant A6,667,430567,505
Events in quadrant B2,596,101647,465
Events in quadrant C3,998,891603,720
Events in quadrant D4,619,373484,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237693
B0116452
C0155352
D0177772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570375713.273716%
B5703200.350693%
C57032474.331054%
D570390915.938979%

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 7136 5703 678 678 9.50% 11.89%
B 7136 5704 11 11 0.15% 0.19%
C 7136 5704 212 212 2.97% 3.72%
D 7136 5704 708 708 9.92% 12.41%

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 15 222 3721606 30189.43 603 590 123.3
A 10 83 450499 3650.21 603 590 123.3
A 15 174 114511 924.27 603 590 123.3
B 8 3 80947 651.17 630 613 123.4
B 12 111 15510 120.75 630 613 123.4
B 0 230 14540 112.89 630 613 123.4
C 15 208 1005841 6984.23 608 610 143.9
C 9 187 373953 2593.94 608 610 143.9
C 15 214 234087 1622.17 608 610 143.9
D 2 249 1932212 13932.18 563 546 138.6
D 12 227 249015 1792.09 563 546 138.6
D 13 249 137405 987.1 563 546 138.6

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