ASTROSAT CZTI

Data Quality Report

Orbit 20210104_A10_123T03_9000004096_level2

Creation date: 2025-12-18T21:56:38.646409
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_123T03_9000004096cztM0_level2.fits modeM0/AS1A10_123T03_9000004096cztM0_level2_quad_clean.evt
Size (bytes)453,124,800314,179,200
Size432.1 MB 299.6 MB
Events in quadrant A2,865,5221,724,227
Events in quadrant B2,741,6461,727,195
Events in quadrant C2,829,2601,652,386
Events in quadrant D2,228,4461,354,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0946940
B0967350
C0955850
D01813300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09040
B09060
C09060
D09060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A445035811.305530%
B444966431.445074%
C445048291.862754%
D44487884919.891204%

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 52114 44518 0 0 0.00% 0.00%
B 52114 44513 0 0 0.00% 0.00%
C 52114 44515 0 0 0.00% 0.00%
D 52114 44034 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 2678 10.98 745 700 180.1
A 9 19 2231 8.5 745 700 180.1
A 0 30 2178 8.21 745 700 180.1
B 2 9 2198 10.55 724 692 142.7
B 5 128 1857 8.16 724 692 142.7
B 2 8 1844 8.07 724 692 142.7
C 1 81 2221 8.11 747 703 187.1
C 1 80 2159 7.78 747 703 187.1
C 12 241 1967 6.75 747 703 187.1
D 6 67 1596 6.02 637 584 168.0
D 6 231 1561 5.81 637 584 168.0
D 15 47 1555 5.78 637 584 168.0

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