ASTROSAT CZTI

Data Quality Report

Orbit 21658

Creation date: 2024-06-27T18:30:46.085861
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/AS1A06_002T02_9000003206_21658cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21658cztM0_level2_quad_clean.evt
Size (bytes)618,840,000108,262,080
Size590.2 MB 103.2 MB
Events in quadrant A4,231,982677,930
Events in quadrant B4,606,296689,982
Events in quadrant C4,365,660660,542
Events in quadrant D4,937,024636,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183542
B0191392
C0185402
D0204302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88513163.570218%
B88523994.507456%
C88523383.818346%
D88523193.603705%

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 9641 8854 0 0 0.00% 0.00%
B 9642 8855 21 21 0.22% 0.24%
C 9642 8855 1 1 0.01% 0.01%
D 9642 8855 65 65 0.67% 0.73%

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 15 236 12590 51.66 1095 1068 223.0
A 13 254 10680 43.1 1095 1068 223.0
A 3 137 9500 37.81 1095 1068 223.0
B 3 64 154769 727.2 1093 1063 211.4
B 0 230 39742 183.0 1093 1063 211.4
B 6 36 32597 149.19 1093 1063 211.4
C 14 238 163826 655.49 1054 1057 248.3
C 10 22 44828 176.27 1054 1057 248.3
C 9 54 40593 159.22 1054 1057 248.3
D 1 52 391987 1515.31 1058 1023 258.0
D 7 238 215798 832.43 1058 1023 258.0
D 2 136 133301 512.69 1058 1023 258.0

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