ASTROSAT CZTI

Data Quality Report

Orbit 07709

Creation date: 2024-06-27T15:22:56.519381
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/AS1A02_155T01_9000001062_07709cztM0_level2.evt modeM0/AS1A02_155T01_9000001062_07709cztM0_level2_quad_clean.evt
Size (bytes)201,309,12023,592,960
Size192.0 MB 22.5 MB
Events in quadrant A1,299,705131,322
Events in quadrant B1,423,792132,939
Events in quadrant C1,898,045130,426
Events in quadrant D1,292,608128,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055901
B060450
C074240
D057300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A265230.113122%
B2652883.318250%
C2652220.829563%
D2652220.829563%

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 2652 2652 1 1 0.04% 0.04%
B 2652 2652 74 74 2.79% 2.79%
C 2652 2652 8 8 0.30% 0.30%
D 2652 2652 20 20 0.75% 0.75%

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 0 23 127732 2000.94 301 294 63.7
A 0 226 11344 173.5 301 294 63.7
A 4 2 2826 39.76 301 294 63.7
B 4 239 257429 4389.31 296 289 58.6
B 0 213 10161 168.51 296 289 58.6
B 0 214 7875 129.49 296 289 58.6
C 9 68 770231 11165.41 288 289 69.0
C 13 61 2261 28.6 288 289 69.0
C 8 222 1578 18.69 288 289 69.0
D 2 152 82273 1125.19 291 281 72.9
D 13 105 43313 590.54 291 281 72.9
D 13 104 39169 533.67 291 281 72.9

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