ASTROSAT CZTI

Data Quality Report

Orbit 10460

Creation date: 2024-06-27T15:59:30.200308
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/AS1A03_126T01_9000001512_10460cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10460cztM0_level2_quad_clean.evt
Size (bytes)321,036,48060,624,000
Size306.2 MB 57.8 MB
Events in quadrant A1,664,812130,112
Events in quadrant B2,380,588448,162
Events in quadrant C2,327,673472,360
Events in quadrant D3,055,602481,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246133
B0246137
C0246135
D0243122

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05646950395
B02829418271
C02497714610
D02922116909

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188
B02010
C02010
D0177

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1722985.691057%
B4678240.513040%
C511990.175816%
D5396220.407709%

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 7237 2343 12 12 0.17% 0.51%
B 7236 5600 2 2 0.03% 0.04%
C 7237 5934 0 0 0.00% 0.00%
D 7237 5840 9 9 0.12% 0.15%

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 13 251 803903 17972.94 209 205 44.7
A 5 16 28741 638.14 209 205 44.7
A 3 80 18938 418.92 209 205 44.7
B 4 239 132416 1229.87 553 539 107.2
B 0 219 34556 317.24 553 539 107.2
B 0 214 24598 224.37 553 539 107.2
C 14 234 17342 120.93 592 595 138.5
C 13 61 4439 27.76 592 595 138.5
C 3 202 1424 5.99 592 595 138.5
D 8 195 369537 2513.36 609 593 146.8
D 1 20 137997 936.04 609 593 146.8
D 12 233 132817 900.75 609 593 146.8

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