ASTROSAT CZTI

Data Quality Report

Orbit 55385

Creation date: 2025-12-23T19:59:10.184999
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/AS1A14_009T01_9000006534_55385cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55385cztM0_level2_quad_clean.evt
Size (bytes)476,023,68097,597,440
Size454.0 MB 93.1 MB
Events in quadrant A5,754,340603,713
Events in quadrant B3,225,948687,935
Events in quadrant C3,764,662620,120
Events in quadrant D4,356,442577,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216072
B0146292
C0159682
D0176842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668272210.805148%
B66821992.978150%
C66821402.095181%
D66823064.579467%

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 7642 6682 572 572 7.48% 8.56%
B 7642 6682 63 63 0.82% 0.94%
C 7642 6682 96 96 1.26% 1.44%
D 7642 6682 252 252 3.30% 3.77%

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 4 159 2722235 15127.74 718 699 179.9
A 0 8 121197 669.79 718 699 179.9
A 11 31 38164 208.25 718 699 179.9
B 10 247 215114 1395.51 714 688 153.7
B 5 172 104858 677.95 714 688 153.7
B 0 199 30445 193.66 714 688 153.7
C 13 3 460549 2364.41 702 693 194.5
C 14 254 197512 1011.97 702 693 194.5
C 7 220 119224 609.44 702 693 194.5
D 8 160 480973 2388.22 702 671 201.1
D 8 245 458360 2275.78 702 671 201.1
D 11 129 367834 1825.66 702 671 201.1

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