ASTROSAT CZTI

Data Quality Report

Orbit 24263

Creation date: 2024-06-27T19:04:05.868373
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_118T01_9000003586_24263cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24263cztM0_level2_quad_clean.evt
Size (bytes)426,294,72076,596,480
Size406.5 MB 73.0 MB
Events in quadrant A2,842,777480,589
Events in quadrant B2,915,559493,578
Events in quadrant C2,899,566473,357
Events in quadrant D3,851,850460,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013139995
B013293999
C013155951
D0163641102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013012
B01308
C01299
D013010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58861242.106694%
B58811312.227512%
C59021532.592342%
D58802073.520408%

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 6713 5936 0 0 0.00% 0.00%
B 6710 5945 3 3 0.04% 0.05%
C 6717 5955 0 0 0.00% 0.00%
D 6686 5930 98 98 1.47% 1.65%

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 3 1 13529 85.71 733 715 149.5
A 13 254 9202 56.77 733 715 149.5
A 3 137 6453 38.38 733 715 149.5
B 0 245 19792 135.21 730 710 141.1
B 12 111 16765 113.77 730 710 141.1
B 11 111 15058 101.67 730 710 141.1
C 14 238 111741 663.87 709 713 167.2
C 2 16 15576 88.87 709 713 167.2
C 7 247 7473 40.42 709 713 167.2
D 8 195 485316 2775.18 713 692 174.6
D 1 52 306903 1753.51 713 692 174.6
D 1 239 195627 1116.29 713 692 174.6

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