ASTROSAT CZTI

Data Quality Report

Orbit 20170529_G07_029T02_9000001256_level2

Creation date: 2025-11-13T21:27:22.989962
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/AS1G07_029T02_9000001256cztM0_level2.fits modeM0/AS1G07_029T02_9000001256cztM0_level2_quad_clean.evt
Size (bytes)145,843,200155,848,320
Size139.1 MB 148.6 MB
Events in quadrant A855,092927,942
Events in quadrant B833,338934,236
Events in quadrant C858,864898,405
Events in quadrant D735,372824,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03320
C03320
D03300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0448700
B0367230
C0333310
D0376230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164403942.396594%
B164532391.452623%
C16453460.279584%
D164562201.336898%

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 17677 16524 0 0 0.00% 0.00%
B 17677 16525 0 0 0.00% 0.00%
C 17677 16531 0 0 0.00% 0.00%
D 17677 16527 0 0 0.00% 0.00%

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 29 850 10.81 222 208 59.4
A 7 110 728 8.75 222 208 59.4
A 0 30 643 7.32 222 208 59.4
B 2 9 733 11.28 220 209 46.4
B 3 17 576 7.9 220 209 46.4
B 5 232 569 7.75 220 209 46.4
C 1 81 666 7.39 226 210 61.7
C 12 241 640 6.97 226 210 61.7
C 1 80 632 6.84 226 210 61.7
D 7 5 551 6.14 210 190 58.8
D 1 19 529 5.77 210 190 58.8
D 11 82 524 5.68 210 190 58.8

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