ASTROSAT CZTI

Data Quality Report

Orbit 32806

Creation date: 2024-06-27T20:42:15.281047
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/AS1T04_064T01_9000004730_32806cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32806cztM0_level2_quad_clean.evt
Size (bytes)600,721,92077,296,320
Size572.9 MB 73.7 MB
Events in quadrant A2,982,425498,550
Events in quadrant B3,816,176492,321
Events in quadrant C3,352,756492,990
Events in quadrant D7,639,638440,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127053
B0150482
C0138212
D0269172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5946530.891356%
B59461943.262698%
C59461051.765893%
D59465799.737639%

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 7259 5947 39 39 0.54% 0.66%
B 7259 5947 113 113 1.56% 1.90%
C 7259 5947 65 65 0.90% 1.09%
D 7259 5947 565 565 7.78% 9.50%

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 14 238 153853 1076.72 701 688 142.3
A 9 143 41588 287.52 701 688 142.3
A 7 16 16532 111.38 701 688 142.3
B 5 172 451301 3349.55 699 683 134.5
B 0 219 253315 1877.87 699 683 134.5
B 15 54 157161 1163.14 699 683 134.5
C 0 10 449337 2856.68 675 681 157.1
C 3 233 65957 415.63 675 681 157.1
C 0 207 61453 386.95 675 681 157.1
D 8 195 3228769 20472.54 655 642 157.7
D 2 250 850193 5387.79 655 642 157.7
D 2 249 261252 1652.77 655 642 157.7

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