ASTROSAT CZTI

Data Quality Report

Orbit 26309

Creation date: 2024-06-27T19:27:18.508257
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_008T02_9000003796_26309cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26309cztM0_level2_quad_clean.evt
Size (bytes)1,266,140,160248,624,640
Size1.2 GB 237.1 MB
Events in quadrant A8,255,8681,593,413
Events in quadrant B8,599,2721,630,412
Events in quadrant C9,242,7081,555,999
Events in quadrant D11,048,9261,528,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363130
B0369040
C0388990
D0449470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177231690.953563%
B177242381.342812%
C177245963.362672%
D177247554.259761%

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 19683 17725 0 0 0.00% 0.00%
B 19684 17726 22 22 0.11% 0.12%
C 19684 17726 155 155 0.79% 0.87%
D 19684 17727 473 473 2.40% 2.67%

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 7 192 101126 235.17 2112 2064 421.2
A 13 254 27614 60.65 2112 2064 421.2
A 3 137 20364 43.44 2112 2064 421.2
B 3 64 198345 491.51 2103 2045 399.4
B 0 230 90152 220.61 2103 2045 399.4
B 12 111 50307 120.84 2103 2045 399.4
C 4 254 667925 1411.82 2025 2036 471.7
C 14 238 322148 678.7 2025 2036 471.7
C 3 233 284249 598.35 2025 2036 471.7
D 1 52 1749137 3617.48 2041 1994 483.0
D 11 176 1042648 2154.69 2041 1994 483.0
D 12 233 407296 839.18 2041 1994 483.0

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