ASTROSAT CZTI

Data Quality Report

Orbit 39474

Creation date: 2024-06-27T22:05:01.987720
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/AS1A12_088T26_9000005482_39474cztM0_level2.fits modeM0/AS1A12_088T26_9000005482_39474cztM0_level2_quad_clean.evt
Size (bytes)183,519,36040,510,080
Size175.0 MB 38.6 MB
Events in quadrant A1,718,156274,391
Events in quadrant B1,124,694284,362
Events in quadrant C2,310,147253,754
Events in quadrant D1,458,891247,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066221
B049571
C084651
D058491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2307652.817512%
B2307271.170351%
C23072299.926311%
D2307421.820546%

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 2307 2307 56 56 2.43% 2.43%
B 2307 2307 21 21 0.91% 0.91%
C 2307 2307 213 213 9.23% 9.23%
D 2307 2307 40 40 1.73% 1.73%

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 15 222 352946 6772.52 250 244 52.1
A 10 83 213010 4085.5 250 244 52.1
A 15 174 157863 3026.57 250 244 52.1
B 8 3 113324 2292.87 251 245 49.3
B 0 230 13166 262.0 251 245 49.3
B 0 199 6171 120.16 251 245 49.3
C 15 208 1129013 19697.32 242 244 57.3
C 9 187 134461 2342.12 242 244 57.3
C 15 214 93872 1633.83 242 244 57.3
D 12 0 221740 3649.26 248 241 60.7
D 12 227 111349 1830.54 248 241 60.7
D 1 52 72322 1187.56 248 241 60.7

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