ASTROSAT CZTI

Data Quality Report

Orbit 37866

Creation date: 2024-06-27T21:45:27.091197
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/AS1C07_001T12_9000005352_37866cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37866cztM0_level2_quad_clean.evt
Size (bytes)431,530,56098,928,000
Size411.5 MB 94.3 MB
Events in quadrant A2,725,925675,686
Events in quadrant B2,745,781683,205
Events in quadrant C2,870,129653,303
Events in quadrant D4,371,869617,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112673
B0114862
C0115002
D0164842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5234120.229270%
B5234731.394727%
C5234230.439434%
D52342284.356133%

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 7116 5235 5 5 0.07% 0.10%
B 7116 5235 47 47 0.66% 0.90%
C 7116 5235 13 13 0.18% 0.25%
D 7116 5235 260 260 3.65% 4.97%

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 10 83 344064 2830.93 609 598 121.3
A 13 6 14436 114.06 609 598 121.3
A 13 254 6497 48.62 609 598 121.3
B 5 172 276570 2433.62 599 583 113.4
B 0 229 52703 459.59 599 583 113.4
B 0 230 32746 283.61 599 583 113.4
C 14 67 242568 1799.39 578 579 134.5
C 15 214 221437 1642.27 578 579 134.5
C 0 10 106247 785.73 578 579 134.5
D 12 235 1536321 10823.0 580 563 141.9
D 2 250 140563 986.63 580 563 141.9
D 2 249 133159 934.45 580 563 141.9

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