ASTROSAT CZTI

Data Quality Report

Orbit 01268

Creation date: 2024-06-27T14:10:07.283493
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/AS1G04_011T02_9000000226_01268cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01268cztM0_level2_quad_clean.evt
Size (bytes)1,482,992,64090,285,120
Size1.4 GB 86.1 MB
Events in quadrant A7,816,487651,359
Events in quadrant B8,911,411642,969
Events in quadrant C8,455,351626,455
Events in quadrant D19,292,075348,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279442
B0311461
C0298321
D0629501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6626170.256565%
B6626671.011168%
C6626490.739511%
D6626576286.960459%

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 7511 6626 150 150 2.00% 2.26%
B 7510 6625 477 477 6.35% 7.20%
C 7510 6625 364 364 4.85% 5.49%
D 7510 6625 6101 6101 81.24% 92.09%

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 8 14 40600 79.31 2017 2034 486.2
A 12 243 10915 18.26 2017 2034 486.2
A 8 15 10784 18.0 2017 2034 486.2
B 8 4 693355 1388.07 2112 2121 498.0
B 6 53 41239 78.55 2112 2121 498.0
B 4 185 34811 65.64 2112 2121 498.0
C 8 208 792927 1523.51 1862 1928 519.2
C 15 241 308711 590.88 1862 1928 519.2
C 3 79 34370 62.48 1862 1928 519.2
D 13 169 7376038 20336.64 1165 1207 362.6
D 12 22 7320099 20182.38 1165 1207 362.6
D 10 84 166724 456.43 1165 1207 362.6

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