ASTROSAT CZTI

Data Quality Report

Orbit 22635

Creation date: 2024-06-27T18:43:50.635276
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/AS1A07_112T01_9000003360_22635cztM0_level2.evt modeM0/AS1A07_112T01_9000003360_22635cztM0_level2_quad_clean.evt
Size (bytes)469,437,12093,637,440
Size447.7 MB 89.3 MB
Events in quadrant A3,121,162604,893
Events in quadrant B3,175,693617,182
Events in quadrant C3,164,073590,349
Events in quadrant D4,319,540574,818

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131341
B0133561
C0132571
D0172291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429380.591072%
B6430460.715397%
C6430731.135303%
D6430450.699844%

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 7539 6430 0 0 0.00% 0.00%
B 7540 6431 3 3 0.04% 0.05%
C 7540 6431 3 3 0.04% 0.05%
D 7540 6431 8 8 0.11% 0.12%

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 11 47 25299 154.49 803 788 158.7
A 13 254 10005 58.09 803 788 158.7
A 0 226 7023 39.3 803 788 158.7
B 0 197 21623 139.46 794 776 149.5
B 12 111 18261 116.97 794 776 149.5
B 11 111 16278 103.71 794 776 149.5
C 14 238 122074 680.19 768 775 178.3
C 0 10 31697 173.4 768 775 178.3
C 13 61 5354 25.68 768 775 178.3
D 12 227 1310831 7010.84 778 757 186.9
D 2 234 25116 130.36 778 757 186.9
D 2 136 22462 116.15 778 757 186.9

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