ASTROSAT CZTI

Data Quality Report

Orbit 20170924_G07_014T02_9000001556_level2

Creation date: 2026-03-16T14:19:19.379327
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_014T02_9000001556cztM0_level2.fits modeM0/AS1G07_014T02_9000001556cztM0_level2_quad_clean.evt
Size (bytes)467,864,640459,023,040
Size446.2 MB 437.8 MB
Events in quadrant A2,819,1222,737,917
Events in quadrant B2,669,7252,629,560
Events in quadrant C2,812,5262,642,149
Events in quadrant D2,365,9422,392,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010460
C010400
D010420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01062400
B01340020
C01043830
D01380940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510494490.879547%
B5101532026.276585%
C511043810.745539%
D5078619583.855393%

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 58072 51623 0 0 0.00% 0.00%
B 58072 51560 0 0 0.00% 0.00%
C 58072 51658 0 0 0.00% 0.00%
D 58072 51338 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 2733 11.03 733 684 185.7
A 7 110 2358 9.01 733 684 185.7
A 9 19 2054 7.37 733 684 185.7
B 2 9 2348 11.87 702 667 141.6
B 14 254 1793 7.95 702 667 141.6
B 3 17 1791 7.94 702 667 141.6
C 1 80 2082 7.17 742 688 194.3
C 1 81 2050 7.01 742 688 194.3
C 12 241 1999 6.75 742 688 194.3
D 3 14 1812 6.54 674 610 183.9
D 1 19 1706 5.96 674 610 183.9
D 6 231 1685 5.85 674 610 183.9

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