ASTROSAT CZTI

Data Quality Report

Orbit 16924

Creation date: 2024-06-27T17:29:34.899022
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_030T01_9000002512_16924cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16924cztM0_level2_quad_clean.evt
Size (bytes)586,517,76092,004,480
Size559.3 MB 87.7 MB
Events in quadrant A4,578,137588,260
Events in quadrant B4,060,932596,147
Events in quadrant C3,537,676577,713
Events in quadrant D5,129,270553,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179411
B0163401
C0145001
D0196451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67383875.743544%
B67373925.818614%
C67371722.553065%
D67374306.382663%

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 7049 6740 137 137 1.94% 2.03%
B 7048 6739 122 122 1.73% 1.81%
C 7048 6739 0 0 0.00% 0.00%
D 7048 6739 249 249 3.53% 3.69%

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 15 174 1228932 7369.12 820 800 166.7
A 0 23 180876 1080.5 820 800 166.7
A 0 226 17355 99.33 820 800 166.7
B 3 64 664159 4243.92 815 793 156.3
B 15 35 51565 324.82 815 793 156.3
B 4 216 45145 283.74 815 793 156.3
C 3 233 345503 1873.5 786 790 184.0
C 14 238 120789 652.19 786 790 184.0
C 13 61 5662 26.48 786 790 184.0
D 1 52 2004900 10388.28 793 770 192.9
D 2 152 61492 314.75 793 770 192.9
D 2 234 26787 134.86 793 770 192.9

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