ASTROSAT CZTI

Data Quality Report

Orbit 15651

Creation date: 2024-06-27T17:11:39.120450
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/AS1T02_086T01_9000002316_15651cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15651cztM0_level2_quad_clean.evt
Size (bytes)533,643,840103,236,480
Size508.9 MB 98.5 MB
Events in quadrant A3,430,532666,207
Events in quadrant B3,578,743672,309
Events in quadrant C3,439,978661,043
Events in quadrant D5,224,228626,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150282
B0151991
C0148631
D0203801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71911632.266722%
B71911562.169378%
C71911462.030316%
D71914846.730636%

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 7337 7192 17 17 0.23% 0.24%
B 7337 7192 0 0 0.00% 0.00%
C 7337 7193 0 0 0.00% 0.00%
D 7337 7192 382 382 5.21% 5.31%

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 15 69 48467 270.43 868 848 176.1
A 15 157 31228 172.53 868 848 176.1
A 0 226 7962 40.4 868 848 176.1
B 3 64 64643 384.07 865 845 166.1
B 3 209 44209 261.06 865 845 166.1
B 0 214 25416 147.92 865 845 166.1
C 14 238 127899 652.83 833 836 194.6
C 3 233 50956 257.51 833 836 194.6
C 7 247 6820 30.74 833 836 194.6
D 1 52 1970373 9722.95 834 807 202.6
D 2 234 30729 147.71 834 807 202.6
D 12 110 28210 135.28 834 807 202.6

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