ASTROSAT CZTI

Data Quality Report

Orbit 43824

Creation date: 2024-06-27T22:56:14.887506
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/AS1A13_018T01_9000005906_43824cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43824cztM0_level2_quad_clean.evt
Size (bytes)692,645,760106,315,200
Size660.6 MB 101.4 MB
Events in quadrant A9,919,774533,960
Events in quadrant B4,437,216793,522
Events in quadrant C3,803,349790,965
Events in quadrant D6,954,313628,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342801
B0175461
C0155611
D0253061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771248736.730173%
B67723505.168340%
C6772881.299468%
D6772106315.696988%

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 7586 6771 1969 1969 25.96% 29.08%
B 7587 6773 154 154 2.03% 2.27%
C 7587 6773 33 33 0.43% 0.49%
D 7587 6772 914 914 12.05% 13.50%

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 15 223 5239205 36961.22 684 670 141.7
A 14 254 954056 6726.75 684 670 141.7
A 10 83 881603 6215.55 684 670 141.7
B 5 235 655362 4138.73 804 780 158.2
B 5 172 382353 2412.57 804 780 158.2
B 7 205 85477 535.51 804 780 158.2
C 3 233 336392 1784.54 798 805 188.1
C 15 158 175966 931.45 798 805 188.1
C 15 157 82980 436.98 798 805 188.1
D 12 2 963717 5044.59 754 732 190.9
D 5 235 918780 4809.19 754 732 190.9
D 2 249 572942 2997.52 754 732 190.9

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