ASTROSAT CZTI

Data Quality Report

Orbit 27853

Creation date: 2024-06-27T19:45:12.885094
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/AS1A10_002T04_9000004022_27853cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27853cztM0_level2_quad_clean.evt
Size (bytes)170,611,20040,239,360
Size162.7 MB 38.4 MB
Events in quadrant A980,992281,983
Events in quadrant B983,855272,644
Events in quadrant C1,180,236262,404
Events in quadrant D1,882,249254,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042660
B042500
C048880
D070070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202290.445104%
B2022120.593472%
C2022783.857567%
D20221879.248269%

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 2022 2022 1 1 0.05% 0.05%
B 2022 2022 0 0 0.00% 0.00%
C 2022 2022 22 22 1.09% 1.09%
D 2022 2022 177 177 8.75% 8.75%

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 6 16 20175 386.67 248 242 51.6
A 13 254 4342 79.53 248 242 51.6
A 13 248 2355 40.99 248 242 51.6
B 0 190 9548 195.48 243 237 47.6
B 10 245 5494 110.37 243 237 47.6
B 12 111 5238 104.99 243 237 47.6
C 3 233 208886 3619.15 238 239 57.7
C 14 238 37980 654.65 238 239 57.7
C 0 207 2668 42.13 238 239 57.7
D 1 52 510289 8749.91 236 231 58.3
D 2 250 224215 3842.39 236 231 58.3
D 13 104 222170 3807.31 236 231 58.3

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