ASTROSAT CZTI

Data Quality Report

Orbit 50770

Creation date: 2025-02-16T02:00:06.386136
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/AS1C07_001T01_9000006450_50770cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50770cztM0_level2_quad_clean.evt
Size (bytes)592,450,56086,397,120
Size565.0 MB 82.4 MB
Events in quadrant A5,364,459573,868
Events in quadrant B3,747,374670,954
Events in quadrant C6,246,083590,259
Events in quadrant D6,070,253330,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204522
B0156302
C0231222
D0225732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645678412.143742%
B64562994.631351%
C64573635.621806%
D6457286144.308502%

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 7546 6457 644 644 8.53% 9.97%
B 7546 6457 129 129 1.71% 2.00%
C 7547 6458 210 210 2.78% 3.25%
D 7546 6450 427 427 5.66% 6.62%

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 4 4 2007511 11882.33 682 663 168.9
A 4 3 127873 753.2 682 663 168.9
A 8 38 83272 489.12 682 663 168.9
B 5 185 445589 3053.92 693 669 145.7
B 7 0 61683 418.8 693 669 145.7
B 0 229 59123 401.23 693 669 145.7
C 5 10 2791971 14886.06 684 678 187.5
C 13 3 183730 976.22 684 678 187.5
C 1 243 68129 359.72 684 678 187.5
D 8 226 775860 6407.26 438 424 121.0
D 8 178 563414 4651.87 438 424 121.0
D 8 146 557371 4601.94 438 424 121.0

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