ASTROSAT CZTI

Data Quality Report

Orbit 09441

Creation date: 2024-06-27T15:46:00.518773
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/AS1A02_178T01_9000001340_09441cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09441cztM0_level2_quad_clean.evt
Size (bytes)352,405,44072,408,960
Size336.1 MB 69.1 MB
Events in quadrant A2,835,971457,086
Events in quadrant B2,565,029454,232
Events in quadrant C2,398,345462,275
Events in quadrant D2,510,495447,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016034
B015864
C016038
D016056

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174745827
B0165395403
C0159594953
D0168985592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B092
C092
D094

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5184390.752315%
B5263360.684021%
C536960.111753%
D5278150.284199%

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 8680 6387 3 3 0.03% 0.05%
B 8682 6429 1 1 0.01% 0.02%
C 8682 6571 0 0 0.00% 0.00%
D 8680 6460 7 7 0.08% 0.11%

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 5 324257 2564.35 614 600 126.2
A 1 162 48924 382.87 614 600 126.2
A 4 2 28154 218.31 614 600 126.2
B 0 229 86011 702.58 620 604 121.6
B 0 219 14531 114.57 620 604 121.6
B 12 111 12900 101.15 620 604 121.6
C 9 68 16629 111.56 608 612 143.6
C 14 234 5220 32.1 608 612 143.6
C 13 61 4686 28.38 608 612 143.6
D 1 52 67664 422.68 596 580 158.7
D 12 233 57363 357.78 596 580 158.7
D 8 195 42718 265.5 596 580 158.7

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