ASTROSAT CZTI

Data Quality Report

Orbit 00799

Creation date: 2024-06-27T14:03:05.478054
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/AS1P01_010T01_9000000112_00799cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00799cztM0_level2_quad_clean.evt
Size (bytes)1,094,705,280102,576,960
Size1.0 GB 97.8 MB
Events in quadrant A8,148,742667,763
Events in quadrant B8,610,198673,903
Events in quadrant C8,050,861649,483
Events in quadrant D7,880,919629,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291620
B0305030
C0288800
D0283820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6975420.602151%
B6975811.161290%
C6975390.559140%
D69741422.036134%

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 7335 6977 269 269 3.67% 3.86%
B 7335 6977 342 342 4.66% 4.90%
C 7335 6977 258 258 3.52% 3.70%
D 7334 6976 325 325 4.43% 4.66%

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 15 171 26769 48.26 2115 2128 510.6
A 15 233 9608 14.65 2115 2128 510.6
A 11 79 8576 12.63 2115 2128 510.6
B 15 22 59764 110.14 2223 2225 522.4
B 0 23 24706 43.03 2223 2225 522.4
B 0 230 19536 33.14 2223 2225 522.4
C 15 241 50862 86.37 2028 2104 564.5
C 3 111 33515 55.64 2028 2104 564.5
C 3 79 28169 46.17 2028 2104 564.5
D 13 25 252632 423.78 1911 1978 591.5
D 13 164 190646 318.98 1911 1978 591.5
D 13 170 103893 172.31 1911 1978 591.5

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