ASTROSAT CZTI

Data Quality Report

Orbit 54142

Creation date: 2025-10-01T03:45:41.523231
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/AS1A14_012T01_9000006512_54142cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54142cztM0_level2_quad_clean.evt
Size (bytes)562,659,840105,600,960
Size536.6 MB 100.7 MB
Events in quadrant A3,572,988715,957
Events in quadrant B4,817,050726,695
Events in quadrant C4,739,222642,858
Events in quadrant D7,116,156589,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161842
B0198912
C0194612
D0264552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7505881.172552%
B75055397.181879%
C75064546.048495%
D750577410.313125%

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 7584 7506 45 45 0.59% 0.60%
B 7585 7505 282 282 3.72% 3.76%
C 7586 7508 191 191 2.52% 2.54%
D 7585 7506 552 552 7.28% 7.35%

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 15 174 197516 991.97 801 782 198.3
A 8 249 74926 373.85 801 782 198.3
A 3 14 67830 338.07 801 782 198.3
B 5 185 640857 3929.05 777 749 162.9
B 5 236 365869 2241.14 777 749 162.9
B 15 20 208957 1278.0 777 749 162.9
C 9 38 611345 2911.3 765 760 209.7
C 14 246 525064 2499.91 765 760 209.7
C 15 217 164608 781.24 765 760 209.7
D 8 176 1689889 7943.69 751 719 212.6
D 7 70 1140385 5359.53 751 719 212.6
D 2 62 585380 2749.5 751 719 212.6

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