ASTROSAT CZTI

Data Quality Report

Orbit 51250

Creation date: 2025-03-20T10:25:43.945865
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_001T01_9000006454_51250cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51250cztM0_level2_quad_clean.evt
Size (bytes)573,658,56085,029,120
Size547.1 MB 81.1 MB
Events in quadrant A5,106,383571,578
Events in quadrant B3,209,485630,460
Events in quadrant C8,702,380420,243
Events in quadrant D3,735,263518,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194901
B0141572
C0301331
D0159111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62091372.206474%
B62091161.868256%
C6209192230.955065%
D62092333.752617%

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 7114 6210 85 85 1.19% 1.37%
B 7114 6210 53 53 0.75% 0.85%
C 7114 6210 1746 1746 24.54% 28.12%
D 7114 6210 195 195 2.74% 3.14%

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 12 3 1782693 11228.04 632 615 158.7
A 12 194 207114 1301.05 632 615 158.7
A 14 254 157800 990.35 632 615 158.7
B 8 128 175210 1284.21 635 613 136.0
B 7 252 159384 1167.81 635 613 136.0
B 10 254 59331 431.89 635 613 136.0
C 4 12 5588257 37969.53 537 534 147.2
C 13 3 800543 5436.2 537 534 147.2
C 3 233 68128 459.31 537 534 147.2
D 3 12 468432 2776.65 599 578 168.5
D 2 216 164916 975.32 599 578 168.5
D 10 181 148319 876.82 599 578 168.5

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