ASTROSAT CZTI

Data Quality Report

Orbit 01243

Creation date: 2024-06-27T14:09:43.377141
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_011T02_9000000226_01243cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01243cztM0_level2_quad_clean.evt
Size (bytes)1,237,006,08087,871,680
Size1.2 GB 83.8 MB
Events in quadrant A7,142,796638,651
Events in quadrant B15,864,995374,388
Events in quadrant C7,138,391624,897
Events in quadrant D6,928,634611,112

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0142
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025481105
B052101212
C02546087
D02483784

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5868150.255624%
B5867388366.183740%
C5871160.272526%
D5869350.596354%

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 7184 5873 177 177 2.46% 3.01%
B 7183 5867 4829 4829 67.23% 82.31%
C 7184 5875 158 158 2.20% 2.69%
D 7184 5874 220 220 3.06% 3.75%

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 3 80 305400 720.59 1778 1789 421.3
A 12 243 9092 17.33 1778 1789 421.3
A 11 79 7575 13.73 1778 1789 421.3
B 2 32 10889917 37924.71 1242 1245 287.1
B 8 4 130621 450.61 1242 1245 287.1
B 5 191 56320 191.82 1242 1245 287.1
C 15 241 306047 633.77 1736 1800 480.1
C 3 111 20499 38.95 1736 1800 480.1
C 9 52 18599 34.99 1736 1800 480.1
D 12 79 398063 780.42 1669 1728 507.8
D 12 22 115118 223.28 1669 1728 507.8
D 1 239 96044 185.72 1669 1728 507.8

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