ASTROSAT CZTI

Data Quality Report

Orbit 31260

Creation date: 2024-06-27T20:25:44.655627
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_073T02_9000004522_31260cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31260cztM0_level2_quad_clean.evt
Size (bytes)200,926,08044,069,760
Size191.6 MB 42.0 MB
Events in quadrant A1,110,886303,206
Events in quadrant B2,087,446295,951
Events in quadrant C1,334,192285,440
Events in quadrant D1,394,091283,365

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048731
B079421
C055611
D057101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2312261.124567%
B23131225.274535%
C23131104.755728%
D2313241.037613%

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 2632 2313 0 0 0.00% 0.00%
B 2633 2314 11 11 0.42% 0.48%
C 2633 2314 11 11 0.42% 0.48%
D 2633 2314 5 5 0.19% 0.22%

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 4863 76.61 286 280 59.8
A 3 137 2992 45.33 286 280 59.8
A 0 226 2476 36.71 286 280 59.8
B 6 159 635712 11147.13 281 274 57.0
B 0 190 229182 4015.6 281 274 57.0
B 10 247 40617 707.71 281 274 57.0
C 3 233 139391 2162.82 265 265 64.3
C 0 10 95816 1485.41 265 265 64.3
C 14 238 43013 664.55 265 265 64.3
D 8 195 291026 4383.0 271 264 66.3
D 2 250 23684 353.04 271 264 66.3
D 12 233 13989 206.89 271 264 66.3

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