ASTROSAT CZTI

Data Quality Report

Orbit 34425

Creation date: 2024-06-27T21:00:21.569623
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/AS1A05_082T10_9000004916_34425cztM0_level2.evt modeM0/AS1A05_082T10_9000004916_34425cztM0_level2_quad_clean.evt
Size (bytes)212,636,16039,147,840
Size202.8 MB 37.3 MB
Events in quadrant A1,290,509253,414
Events in quadrant B1,540,804259,639
Events in quadrant C1,430,110252,647
Events in quadrant D2,001,144234,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053812
B062111
C056811
D076891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257830.116369%
B2578622.404965%
C2578200.775795%
D2578953.685027%

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 4461 2579 1 1 0.02% 0.04%
B 4461 2579 32 32 0.72% 1.24%
C 4461 2579 12 12 0.27% 0.47%
D 4461 2579 82 82 1.84% 3.18%

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 7 16 17416 256.35 321 315 66.7
A 10 83 17193 253.01 321 315 66.7
A 9 143 11824 172.52 321 315 66.7
B 5 172 163729 2637.53 314 306 62.0
B 0 190 101311 1630.15 314 306 62.0
B 0 229 26215 418.15 314 306 62.0
C 15 214 108032 1478.9 308 311 72.8
C 0 10 68857 941.07 308 311 72.8
C 14 67 30605 415.91 308 311 72.8
D 8 195 355443 4681.22 305 296 75.9
D 7 80 317890 4186.23 305 296 75.9
D 2 250 50656 663.8 305 296 75.9

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