ASTROSAT CZTI

Data Quality Report

Orbit 50139

Creation date: 2025-01-05T09:51:55.362449
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_003T01_9000006442_50139cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50139cztM0_level2_quad_clean.evt
Size (bytes)3,317,137,920154,831,680
Size3.1 GB 147.7 MB
Events in quadrant A30,341,042918,822
Events in quadrant B13,340,5801,658,794
Events in quadrant C40,947,414261,084
Events in quadrant D36,759,281587,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01027224
B0523845
C01340874
D01216144

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18274849646.492284%
B1827416208.865054%
C182741573886.122360%
D182741159863.467221%

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 19479 18277 6568 6568 33.72% 35.94%
B 19479 18278 1002 1002 5.14% 5.48%
C 19478 18274 13599 13599 69.82% 74.42%
D 19479 18276 10315 10315 52.95% 56.44%

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 98 9175445 22967.46 1583 1539 399.4
A 8 8 6498432 16265.39 1583 1539 399.4
A 6 250 4955818 12403.36 1583 1539 399.4
B 1 255 2228490 5759.18 1831 1767 386.6
B 2 176 610785 1575.16 1831 1767 386.6
B 10 246 459693 1184.38 1831 1767 386.6
C 4 111 14511866 62826.26 780 773 231.0
C 15 197 4559569 19737.46 780 773 231.0
C 15 230 3394889 14694.94 780 773 231.0
D 15 168 9151888 24639.84 1276 1234 371.4
D 7 61 4550018 12248.45 1276 1234 371.4
D 15 106 2732662 7354.88 1276 1234 371.4

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