ASTROSAT CZTI

Data Quality Report

Orbit 54444

Creation date: 2025-10-21T11:16:38.191750
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/AS1A14_126T19_9000006518_54444cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54444cztM0_level2_quad_clean.evt
Size (bytes)641,626,56092,672,640
Size611.9 MB 88.4 MB
Events in quadrant A2,934,739658,430
Events in quadrant B3,196,233697,096
Events in quadrant C9,816,401489,736
Events in quadrant D7,281,732491,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139942
B0147253
C0337302
D0263142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6734320.475200%
B67331732.569434%
C6733154622.961533%
D6733124818.535571%

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 7849 6735 3 3 0.04% 0.04%
B 7848 6734 70 70 0.89% 1.04%
C 7848 6734 1331 1331 16.96% 19.77%
D 7848 6734 1106 1106 14.09% 16.42%

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 5 243 60529 336.33 717 698 177.9
A 0 8 47445 262.78 717 698 177.9
A 4 3 26805 146.75 717 698 177.9
B 5 185 271945 1768.99 708 682 153.3
B 0 213 47432 304.87 708 682 153.3
B 10 247 42919 275.44 708 682 153.3
C 4 5 6673189 37823.88 639 634 176.4
C 13 3 187794 1060.93 639 634 176.4
C 12 2 127501 719.16 639 634 176.4
D 8 176 3274385 18606.23 615 587 176.0
D 7 70 850570 4830.78 615 587 176.0
D 2 172 161277 913.26 615 587 176.0

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