ASTROSAT CZTI

Data Quality Report

Orbit 20230329_A12_054T02_9000005550_level2

Creation date: 2023-04-03T16:17:00.947533
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/AS1A12_054T02_9000005550cztM0_level2.fits modeM0/AS1A12_054T02_9000005550cztM0_level2_quad_clean.evt
Size (bytes)2,346,013,4402,689,467,840
Size2.2 GB 2.5 GB
Events in quadrant A14,469,23417,868,937
Events in quadrant B13,604,31817,216,781
Events in quadrant C14,019,59416,688,236
Events in quadrant D10,209,79010,968,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055740
B055760
C055760
D055760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05893990
B07055460
C05851630
D07572030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010120
B010120
C010120
D010120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2731365510.201731%
B27313083333.050928%
C27313028131.029912%
D2731347324126.815043%

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 374686 273139 0 0 0.00% 0.00%
B 374686 273104 0 0 0.00% 0.00%
C 374686 272985 0 0 0.00% 0.00%
D 374686 270134 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 9 19 11932 8.97 3778 3543 934.8
A 7 110 11859 8.9 3778 3543 934.8
A 0 29 11764 8.79 3778 3543 934.8
B 2 9 11319 11.4 3603 3442 690.7
B 3 80 9825 9.24 3603 3442 690.7
B 3 17 9405 8.63 3603 3442 690.7
C 1 81 11494 8.5 3704 3462 945.4
C 1 80 11143 8.12 3704 3462 945.4
C 3 203 10943 7.91 3704 3462 945.4
D 4 160 7825 5.93 2966 2684 867.5
D 7 3 7812 5.91 2966 2684 867.5
D 10 189 7802 5.9 2966 2684 867.5

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