ASTROSAT CZTI

Data Quality Report

Orbit 22426

Creation date: 2024-06-27T18:41:15.179147
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/AS1T03_159T01_9000003328_22426cztM0_level2.evt modeM0/AS1T03_159T01_9000003328_22426cztM0_level2_quad_clean.evt
Size (bytes)196,387,20048,954,240
Size187.3 MB 46.7 MB
Events in quadrant A1,401,945325,441
Events in quadrant B1,510,381331,468
Events in quadrant C1,437,923312,780
Events in quadrant D1,402,210309,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060501
B063111
C060701
D061591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28291896.680806%
B28292127.493814%
C28292147.564510%
D28291635.761753%

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 2964 2829 0 0 0.00% 0.00%
B 2964 2829 1 1 0.03% 0.04%
C 2964 2829 0 0 0.00% 0.00%
D 2964 2830 3 3 0.10% 0.11%

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 4012 48.32 363 354 75.7
A 3 137 3386 40.05 363 354 75.7
A 0 226 2952 34.32 363 354 75.7
B 0 244 90939 1230.33 361 349 73.6
B 12 111 9168 119.77 361 349 73.6
B 11 111 7830 101.6 361 349 73.6
C 14 238 53304 621.46 353 353 85.2
C 8 128 4545 49.2 353 353 85.2
C 13 61 2487 25.05 353 353 85.2
D 7 223 28365 315.98 359 347 88.7
D 2 234 11162 121.97 359 347 88.7
D 5 32 8795 95.27 359 347 88.7

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