ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_065T01_9000003554_level2

Creation date: 2025-12-09T21:53:42.600740
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/AS1A07_065T01_9000003554cztM0_level2.fits modeM0/AS1A07_065T01_9000003554cztM0_level2_quad_clean.evt
Size (bytes)476,677,440419,791,680
Size454.6 MB 400.3 MB
Events in quadrant A3,067,8302,627,224
Events in quadrant B2,899,0602,587,172
Events in quadrant C2,931,9242,473,006
Events in quadrant D2,065,4141,560,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01043790
B01173820
C01061750
D02211720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504824080.808209%
B5048217133.393289%
C504829321.846203%
D504821580031.298285%

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 56697 50480 0 0 0.00% 0.00%
B 56697 50480 0 0 0.00% 0.00%
C 56697 50482 0 0 0.00% 0.00%
D 56697 48672 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 2984 11.28 798 746 198.3
A 7 110 2424 8.46 798 746 198.3
A 9 19 2317 7.92 798 746 198.3
B 2 9 2283 10.16 766 727 153.2
B 2 8 1929 7.85 766 727 153.2
B 3 17 1922 7.8 766 727 153.2
C 1 80 2243 7.78 773 722 195.5
C 1 81 2229 7.71 773 722 195.5
C 3 126 2063 6.86 773 722 195.5
D 3 14 1528 6.27 589 536 158.3
D 13 238 1513 6.17 589 536 158.3
D 6 231 1471 5.91 589 536 158.3

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