ASTROSAT CZTI

Data Quality Report

Orbit 58384

Creation date: 2026-07-13T13:20:47.414092
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_045T01_9000006590_58384cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58384cztM0_level2_quad_clean.evt
Size (bytes)492,180,480100,117,440
Size469.4 MB 95.5 MB
Events in quadrant A3,368,758668,747
Events in quadrant B5,714,298641,416
Events in quadrant C3,530,666646,026
Events in quadrant D5,062,897589,506

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149432
B0215982
C0154942
D0198432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69731902.724796%
B6973104815.029399%
C69731642.351929%
D69733024.330991%

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 7753 6973 18 18 0.23% 0.26%
B 7753 6973 738 738 9.52% 10.58%
C 7753 6973 62 62 0.80% 0.89%
D 7753 6973 208 208 2.68% 2.98%

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 12 80 100957 509.65 806 785 196.5
A 12 114 30735 152.38 806 785 196.5
A 2 143 24686 121.6 806 785 196.5
B 6 255 2076178 12929.43 745 718 160.5
B 2 249 245298 1523.65 745 718 160.5
B 0 153 151793 941.15 745 718 160.5
C 4 5 175477 822.68 779 773 212.4
C 6 223 127610 597.27 779 773 212.4
C 14 245 75342 351.14 779 773 212.4
D 12 110 1089701 4970.63 772 739 219.1
D 12 128 206125 937.5 772 739 219.1
D 2 249 150333 682.83 772 739 219.1

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