ASTROSAT CZTI

Data Quality Report

Orbit 37692

Creation date: 2024-06-27T21:43:10.374893
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/AS1A11_075T01_9000005342_37692cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37692cztM0_level2_quad_clean.evt
Size (bytes)653,005,44058,688,640
Size622.8 MB 56.0 MB
Events in quadrant A9,719,486301,620
Events in quadrant B3,412,029375,939
Events in quadrant C2,858,819372,362
Events in quadrant D3,423,983351,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325183
B0134492
C0115392
D0137692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5350307557.476636%
B53502805.233645%
C5350250.467290%
D5350651.214953%

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 7202 5351 2879 2879 39.98% 53.80%
B 7201 5349 231 231 3.21% 4.32%
C 7201 5349 21 21 0.29% 0.39%
D 7201 5349 53 53 0.74% 0.99%

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 7636651 80543.92 470 462 94.8
A 10 83 235554 2479.67 470 462 94.8
A 13 248 15784 161.61 470 462 94.8
B 5 255 495711 4085.29 641 625 121.2
B 5 172 202575 1666.43 641 625 121.2
B 0 230 51829 422.52 641 625 121.2
C 15 214 228189 1539.7 639 645 147.8
C 0 10 99389 668.16 639 645 147.8
C 14 254 31876 211.33 639 645 147.8
D 12 227 470635 3057.99 639 621 153.7
D 13 249 139160 901.36 639 621 153.7
D 5 222 137239 888.86 639 621 153.7

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