ASTROSAT CZTI

Data Quality Report

Orbit 20200207_A07_054T01_9000003486_level2

Creation date: 2025-12-09T05:06:15.409008
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/AS1A07_054T01_9000003486cztM0_level2.fits modeM0/AS1A07_054T01_9000003486cztM0_level2_quad_clean.evt
Size (bytes)716,002,560951,661,440
Size682.8 MB 907.6 MB
Events in quadrant A4,430,4126,289,546
Events in quadrant B4,180,2346,148,029
Events in quadrant C4,237,2565,863,853
Events in quadrant D3,710,1405,398,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015280
B015300
C015300
D015300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01531470
B01714310
C01610810
D01867290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A747366330.846981%
B7473022152.964004%
C7473117902.395258%
D7472115652.094458%

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 91812 74748 0 0 0.00% 0.00%
B 91812 74728 0 0 0.00% 0.00%
C 91812 74663 0 0 0.00% 0.00%
D 91812 74720 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 4581 12.25 1153 1086 285.3
A 7 110 3555 8.66 1153 1086 285.3
A 0 30 3439 8.25 1153 1086 285.3
B 2 9 3398 10.88 1109 1063 214.6
B 2 8 2796 8.07 1109 1063 214.6
B 5 128 2742 7.82 1109 1063 214.6
C 12 241 2988 6.77 1120 1050 286.1
C 3 126 2903 6.48 1120 1050 286.1
C 9 242 2858 6.32 1120 1050 286.1
D 3 14 2783 6.46 1056 960 282.2
D 15 46 2643 5.96 1056 960 282.2
D 10 189 2616 5.87 1056 960 282.2

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