ASTROSAT CZTI

Data Quality Report

Orbit 51727

Creation date: 2025-04-22T12:01:28.057336
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/AS1A13_031T01_9000006462_51727cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51727cztM0_level2_quad_clean.evt
Size (bytes)542,355,84074,871,360
Size517.2 MB 71.4 MB
Events in quadrant A3,034,932541,013
Events in quadrant B3,062,077588,541
Events in quadrant C3,494,443519,614
Events in quadrant D10,051,110228,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01283312
B01305213
C01433012
D033793112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01111
B01120
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5575971.739910%
B55741152.063150%
C55762143.837877%
D5562329359.205322%

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 6741 5579 38 38 0.56% 0.68%
B 6741 5579 43 43 0.64% 0.77%
C 6742 5581 178 178 2.64% 3.19%
D 6740 5568 2860 2860 42.43% 51.36%

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 11 3 198267 1323.52 603 589 149.4
A 4 3 73512 488.24 603 589 149.4
A 5 240 63442 420.82 603 589 149.4
B 5 172 186162 1456.05 598 579 127.5
B 10 41 87392 681.12 598 579 127.5
B 0 213 79889 622.25 598 579 127.5
C 0 192 442529 2787.87 577 574 158.5
C 13 3 270329 1701.63 577 574 158.5
C 15 231 168086 1056.67 577 574 158.5
D 11 129 6367892 60259.25 377 361 105.7
D 2 249 1545961 14626.81 377 361 105.7
D 0 146 227749 2151.89 377 361 105.7

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