ASTROSAT CZTI

Data Quality Report

Orbit 20181130_T03_059T01_9000002546_level2

Creation date: 2025-11-26T03:00:01.320373
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_059T01_9000002546cztM0_level2.fits modeM0/AS1T03_059T01_9000002546cztM0_level2_quad_clean.evt
Size (bytes)712,728,000632,672,640
Size679.7 MB 603.4 MB
Events in quadrant A4,347,5583,721,107
Events in quadrant B4,233,7403,729,847
Events in quadrant C4,224,0503,432,144
Events in quadrant D3,723,6323,221,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540830
B01525070
C01714450
D01599170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015040
B015040
C015040
D015040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7370210161.378524%
B7370210931.482999%
C7370219062.586090%
D7370214962.029796%

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 84611 73695 0 0 0.00% 0.00%
B 84611 73694 0 0 0.00% 0.00%
C 84611 73668 0 0 0.00% 0.00%
D 84611 73689 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 4060 10.58 1129 1055 284.1
A 7 110 3489 8.57 1129 1055 284.1
A 0 30 3288 7.86 1129 1055 284.1
B 2 9 3468 10.68 1117 1062 225.2
B 2 8 2899 8.16 1117 1062 225.2
B 5 128 2823 7.82 1117 1062 225.2
C 1 80 3261 7.69 1115 1037 289.2
C 1 81 3164 7.35 1115 1037 289.2
C 12 241 2957 6.64 1115 1037 289.2
D 3 14 2824 6.5 1062 967 285.6
D 6 231 2710 6.1 1062 967 285.6
D 6 67 2608 5.75 1062 967 285.6

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