ASTROSAT CZTI

Data Quality Report

Orbit 20210226_A10_021T10_9000004210_level2

Creation date: 2025-12-20T20:45:34.227453
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/AS1A10_021T10_9000004210cztM0_level2.fits modeM0/AS1A10_021T10_9000004210cztM0_level2_quad_clean.evt
Size (bytes)137,041,92056,727,360
Size130.7 MB 54.1 MB
Events in quadrant A900,250230,273
Events in quadrant B833,966227,852
Events in quadrant C826,542206,547
Events in quadrant D718,726181,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02560
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271150
B0302820
C0308790
D0490730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125941130.897253%
B126032682.126478%
C1260110248.126339%
D12568171713.661680%

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 18721 12620 0 0 0.00% 0.00%
B 18727 12634 0 0 0.00% 0.00%
C 18743 12623 0 0 0.00% 0.00%
D 14184 12567 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 29 839 10.47 235 223 58.8
A 9 19 677 7.72 235 223 58.8
A 0 30 660 7.43 235 223 58.8
B 2 9 642 9.66 220 212 44.5
B 3 17 579 8.24 220 212 44.5
B 5 128 574 8.13 220 212 44.5
C 1 80 640 7.73 218 207 56.1
C 1 81 639 7.71 218 207 56.1
C 3 202 638 7.69 218 207 56.1
D 15 46 549 6.51 205 189 55.3
D 6 67 547 6.48 205 189 55.3
D 3 14 525 6.08 205 189 55.3

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