ASTROSAT CZTI

Data Quality Report

Orbit 20210708_A10_073T02_9000004522_level2

Creation date: 2025-12-27T09:56:47.288958
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/AS1A10_073T02_9000004522cztM0_level2.fits modeM0/AS1A10_073T02_9000004522cztM0_level2_quad_clean.evt
Size (bytes)918,247,680769,446,720
Size875.7 MB 733.8 MB
Events in quadrant A5,842,6264,630,218
Events in quadrant B5,372,0284,434,494
Events in quadrant C5,531,8844,326,871
Events in quadrant D4,740,2923,590,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018820
B018860
C018860
D018840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01929180
B02907370
C02140270
D03185240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A921918220.891627%
B9210432133.488448%
C9214129193.167971%
D9210783269.039487%

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 106005 92363 0 0 0.00% 0.00%
B 106005 92231 0 0 0.00% 0.00%
C 106005 92313 0 0 0.00% 0.00%
D 106005 92243 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 5682 11.44 1523 1434 371.2
A 9 19 4442 8.1 1523 1434 371.2
A 7 110 4436 8.09 1523 1434 371.2
B 2 9 4159 9.94 1424 1364 281.2
B 3 80 3576 7.87 1424 1364 281.2
B 2 8 3529 7.7 1424 1364 281.2
C 12 241 3896 6.89 1466 1377 365.5
C 3 126 3748 6.49 1466 1377 365.5
C 3 187 3741 6.47 1466 1377 365.5
D 10 189 3388 6.06 1356 1241 354.4
D 7 3 3310 5.84 1356 1241 354.4
D 6 67 3277 5.74 1356 1241 354.4

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