ASTROSAT CZTI

Data Quality Report

Orbit 27717

Creation date: 2024-06-27T19:43:28.117415
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/AS1T03_262T01_9000003988_27717cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27717cztM0_level2_quad_clean.evt
Size (bytes)512,225,280114,177,600
Size488.5 MB 108.9 MB
Events in quadrant A3,340,076774,989
Events in quadrant B3,500,633773,598
Events in quadrant C3,446,424744,753
Events in quadrant D4,786,075712,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142570
B0146710
C0143940
D0188790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479681.049545%
B6479811.250193%
C64791302.006482%
D64792604.012965%

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 7644 6479 2 2 0.03% 0.03%
B 7644 6479 14 14 0.18% 0.22%
C 7644 6479 13 13 0.17% 0.20%
D 7644 6479 213 213 2.79% 3.29%

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 23154 131.73 854 838 169.4
A 8 192 12626 69.59 854 838 169.4
A 0 13 11577 63.39 854 838 169.4
B 3 64 85197 542.5 839 820 155.5
B 0 230 83288 530.22 839 820 155.5
B 12 111 18534 113.89 839 820 155.5
C 14 238 129783 681.95 819 824 189.1
C 3 233 120362 632.13 819 824 189.1
C 15 208 5900 26.84 819 824 189.1
D 1 52 843394 4356.97 820 800 193.4
D 11 176 498874 2575.49 820 800 193.4
D 2 250 206290 1062.57 820 800 193.4

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