ASTROSAT CZTI

Data Quality Report

Orbit 20220623_C07_009T01_9000005200_level2

Creation date: 2026-01-03T11:10:34.103267
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/AS1C07_009T01_9000005200cztM0_level2.fits modeM0/AS1C07_009T01_9000005200cztM0_level2_quad_clean.evt
Size (bytes)1,307,047,6801,564,617,600
Size1.2 GB 1.5 GB
Events in quadrant A8,056,93010,046,475
Events in quadrant B7,470,3909,711,114
Events in quadrant C7,721,6689,394,610
Events in quadrant D6,757,1028,661,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02891700
B03653640
C03036540
D03333840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028580
B028580
C028580
D028580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1397592560.183172%
B13975958594.192217%
C13975917281.236414%
D13975925581.830294%

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 192990 139760 0 0 0.00% 0.00%
B 192990 139668 0 0 0.00% 0.00%
C 192990 139753 0 0 0.00% 0.00%
D 192990 139742 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 7 110 6672 9.26 2103 1984 506.2
A 9 19 6556 9.03 2103 1984 506.2
A 0 29 6555 9.03 2103 1984 506.2
B 2 9 6535 12.16 1981 1902 380.9
B 3 80 5671 9.9 1981 1902 380.9
B 2 8 5192 8.64 1981 1902 380.9
C 1 81 6664 9.13 2042 1923 519.1
C 1 80 6432 8.69 2042 1923 519.1
C 3 202 6153 8.15 2042 1923 519.1
D 10 189 5040 6.35 1939 1771 514.7
D 10 113 5003 6.28 1939 1771 514.7
D 4 160 4930 6.14 1939 1771 514.7

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