ASTROSAT CZTI

Data Quality Report

Orbit 24876

Creation date: 2024-06-27T19:10:51.656822
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/AS1A07_027T02_9000003640_24876cztM0_level2.evt modeM0/AS1A07_027T02_9000003640_24876cztM0_level2_quad_clean.evt
Size (bytes)596,211,84090,757,440
Size568.6 MB 86.6 MB
Events in quadrant A4,023,830551,364
Events in quadrant B4,074,562555,223
Events in quadrant C4,748,631526,964
Events in quadrant D4,635,940527,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175561
B0174931
C0194011
D0191001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84471011.195691%
B84481001.183712%
C84482242.651515%
D8448961.136364%

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 8952 8448 20 20 0.22% 0.24%
B 8953 8449 15 15 0.17% 0.18%
C 8953 8449 90 90 1.01% 1.07%
D 8953 8449 51 51 0.57% 0.60%

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 4 2 82851 401.73 1004 979 203.8
A 6 16 52280 251.73 1004 979 203.8
A 4 208 16087 74.13 1004 979 203.8
B 0 189 53461 276.1 993 966 190.1
B 10 249 41993 215.78 993 966 190.1
B 7 205 33945 173.45 993 966 190.1
C 7 247 824542 3678.73 954 959 223.9
C 14 238 150520 668.05 954 959 223.9
C 2 16 53824 236.13 954 959 223.9
D 8 195 412540 1734.31 976 949 237.3
D 1 52 395559 1662.76 976 949 237.3
D 7 238 138469 579.47 976 949 237.3

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