ASTROSAT CZTI

Data Quality Report

Orbit 26106

Creation date: 2024-06-27T19:24:46.275715
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_018T01_9000003774_26106cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26106cztM0_level2_quad_clean.evt
Size (bytes)1,088,588,160168,641,280
Size1.0 GB 160.8 MB
Events in quadrant A6,137,3031,102,341
Events in quadrant B6,437,4871,114,414
Events in quadrant C7,702,7881,036,760
Events in quadrant D11,818,804961,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266410
B0272540
C0315110
D0438940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129081030.797955%
B129091461.130994%
C129095854.531722%
D1290812339.552216%

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 14613 12910 0 0 0.00% 0.00%
B 14614 12910 17 17 0.12% 0.13%
C 14614 12911 253 253 1.73% 1.96%
D 14613 12909 1073 1073 7.34% 8.31%

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 13 254 20068 57.76 1591 1555 320.5
A 3 137 15012 41.99 1591 1555 320.5
A 0 226 13482 37.21 1591 1555 320.5
B 5 172 75411 242.18 1578 1539 305.0
B 4 80 55277 176.17 1578 1539 305.0
B 3 64 46509 147.43 1578 1539 305.0
C 2 16 1143547 3234.99 1494 1504 353.0
C 3 233 494918 1397.66 1494 1504 353.0
C 14 238 237197 667.63 1494 1504 353.0
D 1 52 5713856 16198.81 1465 1429 352.6
D 7 223 182298 512.89 1465 1429 352.6
D 13 238 107043 299.49 1465 1429 352.6

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