ASTROSAT CZTI

Data Quality Report

Orbit 20250814_A14_002T06_9000006496_level2

Creation date: 2025-08-19T10:11:06.871511
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/AS1A14_002T06_9000006496cztM0_level2.fits modeM0/AS1A14_002T06_9000006496cztM0_level2_quad_clean.evt
Size (bytes)1,896,289,920608,273,280
Size1.8 GB 580.1 MB
Events in quadrant A11,133,164546,234
Events in quadrant B11,645,584675,699
Events in quadrant C7,658,822114,011
Events in quadrant D10,380,658550,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02970
B02970
C02970
D02970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048940
B048940
C048940
D048940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09588230
B06092840
C014887380
D06231270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2411025132521.287671%
B24110097014.023642%
C24110212944553.688895%
D24110096143.987557%

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 288943 240263 0 0 0.00% 0.00%
B 288943 241027 0 0 0.00% 0.00%
C 288942 235077 0 0 0.00% 0.00%
D 288942 240869 0 0 0.00% 0.00%

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 14 188 12389 9.92 2931 2697 977.5
A 9 255 11607 9.12 2931 2697 977.5
A 14 204 9835 7.3 2931 2697 977.5
B 2 9 13243 14.27 3084 2913 724.0
B 2 8 12078 12.66 3084 2913 724.0
B 3 25 9409 8.97 3084 2913 724.0
C 15 175 6219 6.21 2055 1867 701.2
C 3 203 5960 5.84 2055 1867 701.2
C 2 31 5958 5.83 2055 1867 701.2
D 6 218 12758 10.26 2970 2649 985.1
D 15 11 10034 7.5 2970 2649 985.1
D 8 12 9249 6.7 2970 2649 985.1

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