ASTROSAT CZTI

Data Quality Report

Orbit 17415

Creation date: 2024-06-27T17:36:15.665928
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/AS1A05_198T01_9000002578_17415cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17415cztM0_level2_quad_clean.evt
Size (bytes)478,607,04090,532,800
Size456.4 MB 86.3 MB
Events in quadrant A3,173,491582,944
Events in quadrant B3,498,307588,918
Events in quadrant C3,234,754560,578
Events in quadrant D4,139,771548,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137641
B0145801
C0137871
D0167551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6606400.605510%
B6606640.968816%
C6606550.832576%
D66071011.528682%

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 7531 6607 2 2 0.03% 0.03%
B 7531 6607 9 9 0.12% 0.14%
C 7531 6607 0 0 0.00% 0.00%
D 7532 6608 63 63 0.84% 0.95%

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 4 2 35246 206.74 816 799 166.6
A 0 226 7259 38.77 816 799 166.6
A 12 194 6098 31.8 816 799 166.6
B 15 35 123365 787.14 815 797 155.7
B 7 220 45512 287.16 815 797 155.7
B 4 216 42898 270.38 815 797 155.7
C 14 238 122556 676.51 771 776 180.0
C 3 233 56900 311.78 771 776 180.0
C 5 218 34002 184.58 771 776 180.0
D 13 232 498528 2601.07 781 761 191.4
D 11 176 355870 1855.61 781 761 191.4
D 13 189 133209 692.1 781 761 191.4

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