ASTROSAT CZTI

Data Quality Report

Orbit 30936

Creation date: 2024-06-27T20:21:22.398800
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/AS1A10_058T10_9000004472_30936cztM0_level2.evt modeM0/AS1A10_058T10_9000004472_30936cztM0_level2_quad_clean.evt
Size (bytes)47,658,24012,830,400
Size45.5 MB 12.2 MB
Events in quadrant A300,48188,172
Events in quadrant B458,73979,886
Events in quadrant C328,62382,750
Events in quadrant D307,58183,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026561304
B039632145
C027681388
D027321376

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114032561688042446
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02915
B02715
C02610
D02713

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67300.000000%
B60710.164745%
C653152.297090%
D66610.150150%

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 7271 828 0 0 0.00% 0.00%
B 7271 758 0 0 0.00% 0.00%
C 7271 800 0 0 0.00% 0.00%
D 7270 826 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 13 254 1241 65.75 77 76 17.7
A 3 137 722 36.46 77 76 17.7
A 0 226 675 33.81 77 76 17.7
B 6 159 184927 11901.05 69 68 15.5
B 12 111 1651 101.91 69 68 15.5
B 14 111 1435 88.01 69 68 15.5
C 14 238 16972 870.4 73 73 19.4
C 0 10 9268 473.6 73 73 19.4
C 14 254 7835 399.79 73 73 19.4
D 8 195 19318 958.75 75 73 20.1
D 2 250 3154 153.49 75 73 20.1
D 12 227 2441 117.97 75 73 20.1

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