ASTROSAT CZTI

Data Quality Report

Orbit 26306

Creation date: 2024-06-27T19:27:17.719970
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/AS1A09_008T02_9000003796_26306cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26306cztM0_level2_quad_clean.evt
Size (bytes)462,654,720112,449,600
Size441.2 MB 107.2 MB
Events in quadrant A3,278,291724,806
Events in quadrant B3,329,394744,571
Events in quadrant C3,498,349719,217
Events in quadrant D3,416,491716,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145740
B0146290
C0149290
D0151410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7190881.223922%
B71901081.502086%
C71901562.169680%
D7189991.377104%

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 7525 7191 0 0 0.00% 0.00%
B 7525 7191 0 0 0.00% 0.00%
C 7525 7191 21 21 0.28% 0.29%
D 7524 7190 19 19 0.25% 0.26%

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 11096 59.85 849 830 171.5
A 3 137 8129 42.55 849 830 171.5
A 0 226 7212 37.21 849 830 171.5
B 12 111 20080 119.48 843 819 161.2
B 11 111 18221 107.95 843 819 161.2
B 14 111 16341 96.29 843 819 161.2
C 14 238 129510 663.51 823 826 193.9
C 2 16 94989 485.52 823 826 193.9
C 3 233 48558 246.11 823 826 193.9
D 11 176 135757 681.62 835 813 198.0
D 12 33 56465 281.11 835 813 198.0
D 2 234 32025 157.66 835 813 198.0

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