ASTROSAT CZTI

Data Quality Report

Orbit 26261

Creation date: 2024-06-27T19:26:44.364724
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/AS1A09_079T03_9000003790_26261cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26261cztM0_level2_quad_clean.evt
Size (bytes)1,664,576,640294,986,880
Size1.6 GB 281.3 MB
Events in quadrant A10,788,4501,872,502
Events in quadrant B10,844,1011,946,049
Events in quadrant C16,433,3151,773,129
Events in quadrant D10,860,2611,828,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462390
B0461140
C0630180
D0476120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220022481.127170%
B220032671.213471%
C22002246311.194437%
D220031860.845339%

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 25732 22006 10 10 0.04% 0.05%
B 25733 22007 13 13 0.05% 0.06%
C 25733 22007 1789 1789 6.95% 8.13%
D 25733 22007 46 46 0.18% 0.21%

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 0 13 308588 566.97 2709 2650 539.6
A 13 254 35171 60.27 2709 2650 539.6
A 12 16 31282 53.06 2709 2650 539.6
B 0 245 80737 153.33 2714 2647 509.3
B 5 172 66462 125.3 2714 2647 509.3
B 12 111 61464 115.49 2714 2647 509.3
C 2 16 5958826 10415.95 2484 2503 571.8
C 14 238 399024 693.4 2484 2503 571.8
C 4 254 206769 357.2 2484 2503 571.8
D 1 52 562432 895.83 2627 2560 625.0
D 12 233 109295 170.78 2627 2560 625.0
D 13 168 107941 168.61 2627 2560 625.0

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