ASTROSAT CZTI

Data Quality Report

Orbit 52326

Creation date: 2025-07-22T18:32:46.760627
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_011T05_9000006474_52326cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52326cztM0_level2_quad_clean.evt
Size (bytes)884,684,16083,594,880
Size843.7 MB 79.7 MB
Events in quadrant A3,829,315642,141
Events in quadrant B11,986,835423,382
Events in quadrant C8,785,355469,571
Events in quadrant D7,611,692513,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01632650
B04047291
C03096172
D02746271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69272193.161542%
B6917321146.421859%
C6919197728.573493%
D6921110315.937003%

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 7223 6936 104 104 1.44% 1.50%
B 7210 6926 2715 2715 37.66% 39.20%
C 7225 6928 1555 1555 21.52% 22.45%
D 7219 6929 858 858 11.89% 12.38%

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 15 239 176141 977.32 726 710 179.5
A 5 240 175335 972.83 726 710 179.5
A 7 206 149992 831.65 726 710 179.5
B 10 254 4516960 34102.21 627 605 132.4
B 7 0 3296757 24888.67 627 605 132.4
B 12 32 609499 4597.65 627 605 132.4
C 15 224 3246543 19016.48 621 613 170.7
C 12 254 1134603 6643.55 621 613 170.7
C 9 38 544137 3184.27 621 613 170.7
D 12 2 1065437 5650.19 667 636 188.5
D 12 17 902304 4784.55 667 636 188.5
D 8 176 734710 3895.24 667 636 188.5

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