ASTROSAT CZTI

Data Quality Report

Orbit 36982

Creation date: 2024-06-27T21:33:52.345094
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/AS1A11_079T01_9000005254_36982cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36982cztM0_level2_quad_clean.evt
Size (bytes)2,629,860,480318,588,480
Size2.4 GB 303.8 MB
Events in quadrant A11,674,9122,135,942
Events in quadrant B35,522,0801,777,926
Events in quadrant C12,481,8092,136,024
Events in quadrant D18,343,0221,933,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501636
B012208713
C0514775
D0709525

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24153470.194593%
B24152781232.345147%
C241531330.550656%
D2415321939.079617%

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 31918 24158 8 8 0.03% 0.03%
B 31918 24157 6533 6533 20.47% 27.04%
C 31918 24158 89 89 0.28% 0.37%
D 31918 24158 2059 2059 6.45% 8.52%

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 10 83 757951 1360.51 2781 2724 555.1
A 9 143 149785 264.92 2781 2724 555.1
A 13 254 30239 49.57 2781 2724 555.1
B 5 184 24387525 51758.85 2477 2408 471.1
B 4 81 733216 1551.18 2477 2408 471.1
B 0 221 268650 565.11 2477 2408 471.1
C 15 214 1019739 1625.37 2715 2737 625.7
C 0 10 375159 595.2 2715 2737 625.7
C 10 20 225513 356.04 2715 2737 625.7
D 12 17 6355995 10038.54 2597 2526 632.9
D 13 171 726606 1144.05 2597 2526 632.9
D 2 250 714241 1124.52 2597 2526 632.9

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