ASTROSAT CZTI

Data Quality Report

Orbit 21939

Creation date: 2024-06-27T18:34:13.921198
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/AS1A07_100T03_9000003242_21939cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21939cztM0_level2_quad_clean.evt
Size (bytes)216,792,00053,167,680
Size206.7 MB 50.7 MB
Events in quadrant A1,293,080366,274
Events in quadrant B1,346,434364,883
Events in quadrant C1,282,611343,790
Events in quadrant D2,447,862331,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057090
B058600
C057480
D092310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284700.000000%
B2848110.386236%
C284890.316011%
D28481324.634831%

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 2847 2847 0 0 0.00% 0.00%
B 2848 2848 7 7 0.25% 0.25%
C 2848 2848 0 0 0.00% 0.00%
D 2848 2848 114 114 4.00% 4.00%

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 3 1 10147 143.91 332 326 68.2
A 13 254 5371 73.93 332 326 68.2
A 0 226 3038 39.74 332 326 68.2
B 3 64 37713 593.49 325 317 63.0
B 0 197 15066 234.07 325 317 63.0
B 0 190 10234 157.39 325 317 63.0
C 14 238 50510 680.54 311 311 73.8
C 10 22 16597 220.79 311 311 73.8
C 13 61 2162 25.09 311 311 73.8
D 12 235 929233 11769.82 318 307 78.9
D 1 52 198709 2513.82 318 307 78.9
D 13 104 49273 620.42 318 307 78.9

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