ASTROSAT CZTI

Data Quality Report

Orbit 20191218_C05_001T01_9000003374_level2

Creation date: 2025-12-06T19:01:54.326549
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/AS1C05_001T01_9000003374cztM0_level2.fits modeM0/AS1C05_001T01_9000003374cztM0_level2_quad_clean.evt
Size (bytes)686,289,600813,536,640
Size654.5 MB 775.8 MB
Events in quadrant A4,285,9005,262,784
Events in quadrant B4,070,4685,244,493
Events in quadrant C4,170,3704,981,365
Events in quadrant D3,521,8744,416,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014100
B014100
C014100
D014100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01498510
B01478470
C01436080
D02093970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A690257421.074973%
B690209331.351782%
C6902810961.587761%
D6902149427.160140%

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 82223 69064 0 0 0.00% 0.00%
B 82223 69058 0 0 0.00% 0.00%
C 82223 69063 0 0 0.00% 0.00%
D 82223 69019 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 0 29 4145 11.27 1117 1056 274.0
A 7 110 3488 8.88 1117 1056 274.0
A 9 19 3169 7.71 1117 1056 274.0
B 2 9 3168 10.05 1082 1037 212.0
B 5 128 2735 8.01 1082 1037 212.0
B 2 8 2688 7.79 1082 1037 212.0
C 3 234 3055 7.26 1101 1038 277.9
C 12 241 2933 6.82 1101 1038 277.9
C 3 235 2803 6.35 1101 1038 277.9
D 6 231 2555 6.09 1009 922 268.2
D 3 14 2535 6.01 1009 922 268.2
D 10 189 2529 5.99 1009 922 268.2

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