ASTROSAT CZTI

Data Quality Report

Orbit 20160218_P01_069T01_9000000330_level2

Creation date: 2025-10-27T19:11:18.069687
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/AS1P01_069T01_9000000330cztM0_level2.fits modeM0/AS1P01_069T01_9000000330cztM0_level2_quad_clean.evt
Size (bytes)199,287,360265,541,760
Size190.1 MB 253.2 MB
Events in quadrant A1,141,2161,660,846
Events in quadrant B1,141,8501,686,794
Events in quadrant C1,136,0901,597,836
Events in quadrant D982,9781,463,682

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139682588112936139680926400558
B1139682588112936139680926400558
C1139682588112936139680926400558
D1139682588112936139680926400558

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497650
B0494030
C0493670
D0508510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237373911.647217%
B237372851.200657%
C237372561.078485%
D237362230.939501%

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 24654 23737 0 0 0.00% 0.00%
B 24654 23736 0 0 0.00% 0.00%
C 24654 23738 0 0 0.00% 0.00%
D 24654 23736 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 1058 10.76 295 274 72.9
A 7 110 1015 10.17 295 274 72.9
A 14 188 995 9.89 295 274 72.9
B 2 9 911 10.81 301 285 57.9
B 10 225 784 8.61 301 285 57.9
B 14 254 778 8.51 301 285 57.9
C 12 241 779 6.72 299 276 74.9
C 9 242 743 6.24 299 276 74.9
C 2 127 741 6.21 299 276 74.9
D 3 30 699 6.58 279 255 67.4
D 10 189 696 6.54 279 255 67.4
D 1 19 691 6.47 279 255 67.4

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