ASTROSAT CZTI

Data Quality Report

Orbit 25262

Creation date: 2024-06-27T19:15:39.523458
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/AS1A09_027T01_9000003694_25262cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25262cztM0_level2_quad_clean.evt
Size (bytes)161,547,84035,740,800
Size154.1 MB 34.1 MB
Events in quadrant A835,818243,046
Events in quadrant B996,405244,262
Events in quadrant C973,917235,379
Events in quadrant D1,958,884224,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037330
B042280
C040420
D071690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183860.326442%
B183850.272035%
C1838271.468988%
D1838814.406964%

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 1838 1838 0 0 0.00% 0.00%
B 1838 1838 0 0 0.00% 0.00%
C 1838 1838 4 4 0.22% 0.22%
D 1838 1838 43 43 2.34% 2.34%

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 13 254 3306 69.01 215 210 44.9
A 8 255 1955 38.89 215 210 44.9
A 0 226 1934 38.43 215 210 44.9
B 15 33 95948 2265.79 216 211 42.3
B 0 190 17774 415.66 216 211 42.3
B 3 64 14832 346.03 216 211 42.3
C 2 16 49466 954.03 214 215 51.6
C 3 233 41116 792.29 214 215 51.6
C 14 238 33121 637.42 214 215 51.6
D 9 35 434715 8129.37 213 207 53.4
D 1 52 288965 5402.48 213 207 53.4
D 8 195 277936 5196.13 213 207 53.4

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