ASTROSAT CZTI

Data Quality Report

Orbit 21883

Creation date: 2024-06-27T18:33:26.276186
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_041T01_9000003234_21883cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21883cztM0_level2_quad_clean.evt
Size (bytes)1,897,485,120418,112,640
Size1.8 GB 398.7 MB
Events in quadrant A13,508,5992,709,981
Events in quadrant B14,368,0572,749,381
Events in quadrant C13,260,6592,663,398
Events in quadrant D14,416,4102,597,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0592665
B0609275
C0584055
D0622135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282893411.205416%
B282893691.304394%
C282894081.442257%
D282904461.576529%

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 32804 28289 38 38 0.12% 0.13%
B 32804 28289 52 52 0.16% 0.18%
C 32804 28289 0 0 0.00% 0.00%
D 32805 28290 214 214 0.65% 0.76%

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 5 16 266971 388.37 3412 3343 678.8
A 14 235 65691 91.85 3412 3343 678.8
A 13 254 52349 72.19 3412 3343 678.8
B 3 64 311996 483.95 3406 3326 637.8
B 0 190 228786 353.49 3406 3326 637.8
B 0 230 169269 260.17 3406 3326 637.8
C 14 238 515837 679.22 3261 3280 754.6
C 8 208 26961 31.38 3261 3280 754.6
C 13 61 23110 26.28 3261 3280 754.6
D 1 52 708786 880.17 3304 3204 801.6
D 2 136 569829 706.83 3304 3204 801.6
D 7 238 234129 288.06 3304 3204 801.6

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