ASTROSAT CZTI

Data Quality Report

Orbit 52667

Creation date: 2025-06-23T22:08:46.179441
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_011T07_9000006480_52667cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52667cztM0_level2_quad_clean.evt
Size (bytes)910,840,320107,974,080
Size868.6 MB 103.0 MB
Events in quadrant A7,456,376709,061
Events in quadrant B6,456,201806,411
Events in quadrant C11,833,949555,474
Events in quadrant D7,339,933630,336

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277132
B0247792
C0407912
D0274862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A816384510.351586%
B81643304.042136%
C8164236528.968643%
D816488710.864772%

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 9828 8163 632 632 6.43% 7.74%
B 9829 8164 170 170 1.73% 2.08%
C 9828 8163 2355 2355 23.96% 28.85%
D 9829 8164 836 836 8.51% 10.24%

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 3 14 1716091 8107.64 840 816 211.6
A 14 254 1228839 5804.53 840 816 211.6
A 15 174 354313 1670.88 840 816 211.6
B 10 128 1843134 10187.21 846 816 180.8
B 2 249 283077 1560.78 846 816 180.8
B 5 185 191050 1051.91 846 816 180.8
C 15 248 7561077 36935.46 745 739 204.7
C 13 3 785612 3834.44 745 739 204.7
C 15 233 252040 1227.71 745 739 204.7
D 8 176 2024235 8700.59 800 763 232.6
D 1 7 700772 3009.92 800 763 232.6
D 3 12 692812 2975.69 800 763 232.6

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