ASTROSAT CZTI

Data Quality Report

Orbit 53407

Creation date: 2025-08-14T13:46:31.379455
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_011T09_9000006494_53407cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53407cztM0_level2_quad_clean.evt
Size (bytes)1,131,770,88091,166,400
Size1.1 GB 86.9 MB
Events in quadrant A5,131,405748,551
Events in quadrant B7,888,334739,783
Events in quadrant C20,710,67059,341
Events in quadrant D7,534,146645,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209113
B0290632
C0668962
D0280122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81483964.860088%
B8149106113.020002%
C8149762193.520677%
D81497759.510369%

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 9558 8149 253 253 2.65% 3.10%
B 9559 8151 733 733 7.67% 8.99%
C 9559 8149 7452 7452 77.96% 91.45%
D 9559 8151 652 652 6.82% 8.00%

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 15 174 385910 1800.16 860 839 213.9
A 4 249 357775 1668.63 860 839 213.9
A 7 191 264387 1232.05 860 839 213.9
B 4 206 1961548 11111.73 824 795 176.5
B 2 249 766225 4337.75 824 795 176.5
B 4 171 574475 3251.09 824 795 176.5
C 1 241 15607505 145318.94 390 386 107.4
C 15 224 2539065 23637.81 390 386 107.4
C 1 16 311932 2900.83 390 386 107.4
D 2 172 1991058 8435.47 824 786 235.9
D 12 17 771119 3264.94 824 786 235.9
D 2 153 340083 1438.06 824 786 235.9

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