ASTROSAT CZTI

Data Quality Report

Orbit 01297

Creation date: 2024-06-27T14:10:35.383916
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/AS1G04_002T02_9000000230_01297cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01297cztM0_level2_quad_clean.evt
Size (bytes)1,410,701,76094,144,320
Size1.3 GB 89.8 MB
Events in quadrant A8,739,986627,337
Events in quadrant B8,628,861646,066
Events in quadrant C7,882,830632,502
Events in quadrant D17,037,642483,829

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307162
B0302931
C0281051
D0557551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65923455.233617%
B6592280.424757%
C6592130.197209%
D6592311647.269417%

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 7487 6592 648 648 8.66% 9.83%
B 7487 6593 405 405 5.41% 6.14%
C 7487 6592 136 136 1.82% 2.06%
D 7487 6592 5186 5186 69.27% 78.67%

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 4 32 1224058 2610.22 1943 1956 468.2
A 15 127 43638 89.03 1943 1956 468.2
A 12 243 10095 17.38 1943 1956 468.2
B 8 4 533669 1086.02 2084 2093 489.5
B 15 22 53434 104.89 2084 2093 489.5
B 6 53 47254 92.26 2084 2093 489.5
C 15 241 337638 627.81 1915 1986 534.6
C 3 111 29307 51.1 1915 1986 534.6
C 3 79 27889 48.45 1915 1986 534.6
D 13 169 10218357 21539.64 1536 1594 474.3
D 10 84 853121 1795.24 1536 1594 474.3
D 13 73 53609 109.66 1536 1594 474.3

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