ASTROSAT CZTI

Data Quality Report

Orbit 20190917_A06_009T02_9000003170_level2

Creation date: 2025-12-03T17:41:19.535585
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/AS1A06_009T02_9000003170cztM0_level2.fits modeM0/AS1A06_009T02_9000003170cztM0_level2_quad_clean.evt
Size (bytes)118,036,800109,857,600
Size112.6 MB 104.8 MB
Events in quadrant A716,750643,366
Events in quadrant B687,560643,418
Events in quadrant C701,324620,608
Events in quadrant D593,784543,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256120
B0269790
C0262640
D0390350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12668410.323650%
B12668780.615725%
C126681070.844648%
D126686855.407326%

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 14193 12667 0 0 0.00% 0.00%
B 14193 12665 0 0 0.00% 0.00%
C 14193 12666 0 0 0.00% 0.00%
D 14193 12663 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 29 668 10.27 186 175 48.0
A 7 110 625 9.38 186 175 48.0
A 9 19 547 7.75 186 175 48.0
B 2 9 591 11.25 181 173 37.1
B 2 8 507 8.99 181 173 37.1
B 2 245 459 7.7 181 173 37.1
C 3 158 520 6.99 184 172 49.8
C 1 81 506 6.71 184 172 49.8
C 1 80 505 6.69 184 172 49.8
D 15 46 439 6.16 169 154 46.3
D 7 3 438 6.14 169 154 46.3
D 3 14 435 6.07 169 154 46.3

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