ASTROSAT CZTI

Data Quality Report

Orbit 20170513_G07_010T02_9000001222_level2

Creation date: 2025-11-13T14:34:39.070269
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/AS1G07_010T02_9000001222cztM0_level2.fits modeM0/AS1G07_010T02_9000001222cztM0_level2_quad_clean.evt
Size (bytes)366,448,320295,096,320
Size349.5 MB 281.4 MB
Events in quadrant A2,241,1841,672,112
Events in quadrant B2,181,6621,679,961
Events in quadrant C2,239,7841,619,062
Events in quadrant D1,864,2841,395,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0887470
B0797190
C0782170
D01115250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07640
C07740
D07590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0880
C0870
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374359902.644584%
B375116281.674176%
C375124381.167626%
D3715125226.788512%

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 47134 37903 0 0 0.00% 0.00%
B 47134 37936 0 0 0.00% 0.00%
C 47134 37949 0 0 0.00% 0.00%
D 47133 37669 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 2193 11.38 584 547 144.7
A 7 110 1789 8.59 584 547 144.7
A 0 30 1728 8.16 584 547 144.7
B 2 9 1936 12.2 574 546 114.0
B 5 128 1496 8.33 574 546 114.0
B 3 17 1480 8.19 574 546 114.0
C 1 80 1666 7.14 591 550 156.3
C 1 81 1640 6.98 591 550 156.3
C 1 65 1512 6.16 591 550 156.3
D 6 231 1407 6.5 531 483 142.1
D 1 19 1340 6.03 531 483 142.1
D 6 38 1298 5.74 531 483 142.1

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