ASTROSAT CZTI

Data Quality Report

Orbit 26461

Creation date: 2024-06-27T19:29:19.879806
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/AS1A09_104T02_9000003826_26461cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26461cztM0_level2_quad_clean.evt
Size (bytes)289,203,84039,251,520
Size275.8 MB 37.4 MB
Events in quadrant A1,652,162253,184
Events in quadrant B1,693,769260,661
Events in quadrant C1,985,447240,818
Events in quadrant D3,219,190216,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067160
B067920
C078070
D0117630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3047632.067607%
B3047983.216278%
C30471916.268461%
D304741813.718412%

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 4352 3048 0 0 0.00% 0.00%
B 4352 3048 2 2 0.05% 0.07%
C 4352 3048 31 31 0.71% 1.02%
D 4352 3048 346 346 7.95% 11.35%

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 13 254 4917 51.46 428 419 87.4
A 3 137 3919 40.04 428 419 87.4
A 0 226 3662 37.1 428 419 87.4
B 0 244 10216 117.87 426 413 83.2
B 12 111 9680 111.43 426 413 83.2
B 11 111 8754 100.29 426 413 83.2
C 3 233 250175 2553.54 408 411 97.8
C 2 16 69333 704.65 408 411 97.8
C 14 238 65132 661.7 408 411 97.8
D 1 52 1056959 10949.02 396 386 96.5
D 12 233 565783 5859.08 396 386 96.5
D 7 80 81098 836.4 396 386 96.5

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