ASTROSAT CZTI

Data Quality Report

Orbit 51990

Creation date: 2025-05-09T09:33:07.505304
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/AS1C09_011T06_9000006468_51990cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51990cztM0_level2_quad_clean.evt
Size (bytes)698,028,48089,331,840
Size665.7 MB 85.2 MB
Events in quadrant A7,486,712508,362
Events in quadrant B5,426,342639,077
Events in quadrant C5,714,473580,679
Events in quadrant D6,706,869521,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267483
B0207402
C0216282
D0245172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523145722.336348%
B65235478.385712%
C65236109.351525%
D652369310.623946%

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 7633 6524 1175 1175 15.39% 18.01%
B 7633 6524 281 281 3.68% 4.31%
C 7633 6524 528 528 6.92% 8.09%
D 7633 6524 629 629 8.24% 9.64%

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 7 64 3006428 19439.11 612 596 154.6
A 12 2 406095 2622.42 612 596 154.6
A 4 95 344671 2225.18 612 596 154.6
B 4 206 714932 5096.79 664 643 140.1
B 8 3 711833 5074.67 664 643 140.1
B 12 32 214282 1524.41 664 643 140.1
C 15 224 1916949 10478.09 656 648 182.9
C 13 3 704350 3847.75 656 648 182.9
C 12 252 126338 687.26 656 648 182.9
D 8 176 1222678 6773.05 629 601 180.4
D 12 17 955830 5294.11 629 601 180.4
D 6 42 633752 3509.08 629 601 180.4

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