ASTROSAT CZTI

Data Quality Report

Orbit 28268

Creation date: 2024-06-27T19:49:50.738102
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/AS1A10_067T01_9000004076_28268cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28268cztM0_level2_quad_clean.evt
Size (bytes)559,641,600117,480,960
Size533.7 MB 112.0 MB
Events in quadrant A3,358,126806,138
Events in quadrant B3,836,783825,825
Events in quadrant C3,446,294766,681
Events in quadrant D5,863,574702,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140530
B0156290
C0143720
D0218630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557330.503279%
B65571101.677596%
C6557731.113314%
D655766410.126582%

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 7837 6558 3 3 0.04% 0.05%
B 7837 6558 40 40 0.51% 0.61%
C 7837 6558 0 0 0.00% 0.00%
D 7837 6558 637 637 8.13% 9.71%

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 12 96 11203 60.09 868 854 172.2
A 13 254 10946 58.6 868 854 172.2
A 3 137 7948 41.19 868 854 172.2
B 10 245 369880 2287.98 870 848 161.3
B 10 246 47297 287.98 870 848 161.3
B 12 111 19695 116.85 870 848 161.3
C 14 238 136916 705.49 830 839 192.9
C 3 233 32931 166.38 830 839 192.9
C 15 208 21555 107.4 830 839 192.9
D 1 52 2163662 11482.28 793 773 188.4
D 8 195 375696 1990.38 793 773 188.4
D 7 238 148900 786.37 793 773 188.4

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