ASTROSAT CZTI

Data Quality Report

Orbit 20170320_G06_028T01_9000001094_level2

Creation date: 2025-11-10T05:03:17.639516
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/AS1G06_028T01_9000001094cztM0_level2.fits modeM0/AS1G06_028T01_9000001094cztM0_level2_quad_clean.evt
Size (bytes)225,155,520244,186,560
Size214.7 MB 232.9 MB
Events in quadrant A1,353,3721,481,071
Events in quadrant B1,338,6401,527,615
Events in quadrant C1,397,9041,513,372
Events in quadrant D1,163,0821,307,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0579680
B0517670
C0525300
D0655180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227465102.242152%
B227465402.374044%
C227463951.736569%
D2274616867.412292%

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 27876 22732 0 0 0.00% 0.00%
B 27876 22746 0 0 0.00% 0.00%
C 27876 22746 0 0 0.00% 0.00%
D 27876 22717 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 1318 11.01 351 331 89.6
A 7 110 1151 9.15 351 331 89.6
A 0 30 1029 7.79 351 331 89.6
B 2 9 1152 11.22 353 337 72.7
B 5 128 927 8.12 353 337 72.7
B 2 8 907 7.85 353 337 72.7
C 1 80 1093 7.61 368 345 98.3
C 1 81 1058 7.25 368 345 98.3
C 12 250 1004 6.7 368 345 98.3
D 6 231 853 6.23 330 301 88.5
D 7 5 832 6.0 330 301 88.5
D 6 38 815 5.8 330 301 88.5

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