ASTROSAT CZTI

Data Quality Report

Orbit 32668

Creation date: 2024-06-27T20:40:36.947755
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/AS1A10_057T03_9000004722_32668cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32668cztM0_level2_quad_clean.evt
Size (bytes)578,894,40075,487,680
Size552.1 MB 72.0 MB
Events in quadrant A2,835,827495,152
Events in quadrant B3,812,568501,282
Events in quadrant C2,834,754492,054
Events in quadrant D7,694,928430,993

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116873
B0148632
C0117812
D0264792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229831.587302%
B5229851.625550%
C52291001.912412%
D5229177533.945305%

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 7082 5230 66 66 0.93% 1.26%
B 7082 5230 44 44 0.62% 0.84%
C 7082 5230 78 78 1.10% 1.49%
D 7082 5230 1675 1675 23.65% 32.03%

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 15 249 196245 1588.75 617 605 123.1
A 0 253 128153 1035.79 617 605 123.1
A 14 238 65516 527.13 617 605 123.1
B 0 219 429576 3626.14 625 615 118.3
B 12 1 353880 2986.26 625 615 118.3
B 3 26 267516 2256.2 625 615 118.3
C 0 10 267217 1960.28 591 597 136.0
C 8 35 99873 729.91 591 597 136.0
C 8 34 49354 358.48 591 597 136.0
D 7 38 1291269 10913.95 494 483 118.3
D 7 80 813275 6872.38 494 483 118.3
D 12 33 753018 6362.89 494 483 118.3

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