ASTROSAT CZTI

Data Quality Report

Orbit 50714

Creation date: 2025-02-12T07:31:19.747290
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_003T01_9000006448_50714cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50714cztM0_level2_quad_clean.evt
Size (bytes)658,272,96096,154,560
Size627.8 MB 91.7 MB
Events in quadrant A5,036,956626,290
Events in quadrant B4,123,692722,621
Events in quadrant C6,584,299560,176
Events in quadrant D8,061,891499,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01482
B01471
C01480
D01491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020159304
B017754342
C025276582
D029443300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72225377.435613%
B72162363.270510%
C7214132618.380926%
D7229154221.330751%

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 7915 7279 334 334 4.22% 4.59%
B 7915 7267 93 93 1.17% 1.28%
C 7915 7270 841 841 10.63% 11.57%
D 7914 7282 1279 1279 16.16% 17.56%

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 12 80 865218 4615.94 752 732 187.3
A 9 191 306305 1631.61 752 732 187.3
A 4 3 166193 883.48 752 732 187.3
B 0 229 181352 1117.89 766 739 161.6
B 1 207 113769 699.59 766 739 161.6
B 0 213 106141 652.38 766 739 161.6
C 5 10 2879423 15290.95 680 673 188.3
C 13 3 126259 667.07 680 673 188.3
C 15 231 107113 565.37 680 673 188.3
D 8 176 3782931 20572.75 668 646 183.8
D 2 249 867475 4714.89 668 646 183.8
D 11 245 230249 1248.87 668 646 183.8

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