ASTROSAT CZTI

Data Quality Report

Orbit 33638

Creation date: 2024-06-27T20:50:56.519192
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/AS1T04_076T01_9000004810_33638cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33638cztM0_level2_quad_clean.evt
Size (bytes)515,041,92057,291,840
Size491.2 MB 54.6 MB
Events in quadrant A2,873,344345,372
Events in quadrant B4,659,511335,635
Events in quadrant C3,585,628347,437
Events in quadrant D4,111,091325,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119433
B0175312
C0143972
D0161812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544150.091895%
B544159110.861974%
C54411382.536298%
D54411683.087668%

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 7293 5442 0 0 0.00% 0.00%
B 7293 5442 472 472 6.47% 8.67%
C 7293 5442 106 106 1.45% 1.95%
D 7293 5442 134 134 1.84% 2.46%

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 5 168 73365 512.5 709 696 141.8
A 9 143 30696 211.57 709 696 141.8
A 13 6 11989 79.64 709 696 141.8
B 5 172 1682577 13227.05 674 659 127.2
B 5 207 73579 573.46 674 659 127.2
B 15 222 36131 278.96 674 659 127.2
C 3 233 297964 1890.84 687 693 157.2
C 0 10 286719 1819.32 687 693 157.2
C 15 214 249759 1584.23 687 693 157.2
D 8 195 691102 4045.18 685 668 170.7
D 13 249 306285 1790.58 685 668 170.7
D 7 223 105546 614.47 685 668 170.7

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