ASTROSAT CZTI

Data Quality Report

Orbit 52923

Creation date: 2025-07-17T01:35:59.516460
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_9000006484_52923cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52923cztM0_level2_quad_clean.evt
Size (bytes)1,040,348,16081,011,520
Size992.2 MB 77.3 MB
Events in quadrant A19,312,65014,543
Events in quadrant B3,921,598749,062
Events in quadrant C6,650,298587,494
Events in quadrant D8,047,328581,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0626000
B0168720
C0251941
D0292260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7475735898.434783%
B7476710.949706%
C7475108214.474916%
D747592912.428094%

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 7475 7475 6931 6931 92.72% 92.72%
B 7476 7476 32 32 0.43% 0.43%
C 7475 7475 786 786 10.52% 10.52%
D 7475 7475 787 787 10.53% 10.53%

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 9 191 17965069 295318.16 237 231 60.8
A 15 174 120041 1969.52 237 231 60.8
A 0 8 90720 1487.52 237 231 60.8
B 10 247 140549 844.03 779 752 165.6
B 10 191 121558 729.37 779 752 165.6
B 12 32 101254 606.78 779 752 165.6
C 15 224 1359136 6868.13 723 716 197.8
C 15 230 1152945 5825.64 723 716 197.8
C 13 3 479026 2418.32 723 716 197.8
D 8 176 1589576 7384.32 742 705 215.2
D 15 78 891116 4138.21 742 705 215.2
D 15 125 704250 3269.74 742 705 215.2

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