ASTROSAT CZTI

Data Quality Report

Orbit 53227

Creation date: 2025-07-31T16:13:31.956728
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/AS1C09_011T06_9000006490_53227cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53227cztM0_level2_quad_clean.evt
Size (bytes)766,203,84092,537,280
Size730.7 MB 88.3 MB
Events in quadrant A7,102,871574,257
Events in quadrant B6,220,313628,942
Events in quadrant C9,593,623480,930
Events in quadrant D4,879,126608,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265212
B0238572
C0336722
D0199032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7310125017.099863%
B7310118816.251710%
C7310212129.015048%
D73092563.502531%

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 7380 7312 1046 1046 14.17% 14.31%
B 7380 7312 902 902 12.22% 12.34%
C 7380 7312 1923 1923 26.06% 26.30%
D 7379 7311 203 203 2.75% 2.78%

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 3 62 3932900 23007.91 687 671 170.9
A 12 115 171852 1001.6 687 671 170.9
A 0 8 83115 482.39 687 671 170.9
B 2 249 3045648 20602.39 690 665 147.8
B 4 81 118157 794.95 690 665 147.8
B 5 185 57334 383.42 690 665 147.8
C 15 165 2686195 15506.75 629 624 173.2
C 0 240 1689792 9753.42 629 624 173.2
C 15 224 1214646 7009.88 629 624 173.2
D 3 12 547884 2708.47 722 690 202.0
D 15 125 373669 1846.15 722 690 202.0
D 12 3 237145 1170.39 722 690 202.0

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