ASTROSAT CZTI

Data Quality Report

Orbit 22965

Creation date: 2024-06-27T18:48:05.792091
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/AS1A07_062T01_9000003392_22965cztM0_level2.evt modeM0/AS1A07_062T01_9000003392_22965cztM0_level2_quad_clean.evt
Size (bytes)590,964,480102,015,360
Size563.6 MB 97.3 MB
Events in quadrant A4,047,301644,348
Events in quadrant B4,111,551642,304
Events in quadrant C4,090,338613,715
Events in quadrant D5,075,321602,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175542
B0175452
C0175642
D0207792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8448931.100852%
B84481061.254735%
C84481451.716383%
D84482683.172348%

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 9963 8450 1 1 0.01% 0.01%
B 9963 8450 4 4 0.04% 0.05%
C 9963 8450 5 5 0.05% 0.06%
D 9963 8450 148 148 1.49% 1.75%

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 6 16 93233 448.22 1022 997 205.8
A 13 254 14356 64.92 1022 997 205.8
A 13 170 11827 52.63 1022 997 205.8
B 0 189 54011 269.19 1017 992 197.0
B 12 111 24202 117.84 1017 992 197.0
B 0 190 21926 106.29 1017 992 197.0
C 14 238 155217 673.06 978 985 229.1
C 0 10 61029 262.03 978 985 229.1
C 7 247 46355 197.99 978 985 229.1
D 1 52 543248 2257.26 994 964 240.2
D 13 153 293207 1216.46 994 964 240.2
D 2 136 103598 427.21 994 964 240.2

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