ASTROSAT CZTI

Data Quality Report

Orbit 08438

Creation date: 2024-06-27T15:30:06.976336
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/AS1C02_028T01_9000001146_08438cztM0_level2.evt modeM0/AS1C02_028T01_9000001146_08438cztM0_level2_quad_clean.evt
Size (bytes)25,318,0804,052,160
Size24.1 MB 3.9 MB
Events in quadrant A202,78625,267
Events in quadrant B190,30220,887
Events in quadrant C177,61821,067
Events in quadrant D168,56022,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B0100
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07262
B06051
C06356
D06553

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067795962
B069106152
C066085877
D069216227

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38161.574803%
B34082.352941%
C33651.488095%
D32061.875000%

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 4347 607 0 0 0.00% 0.00%
B 2452 539 0 0 0.00% 0.00%
C 6004 552 0 0 0.00% 0.00%
D 2481 537 0 0 0.00% 0.00%

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 0 226 497 36.21 52 51 12.3
A 12 194 431 30.85 52 51 12.3
A 15 223 363 25.33 52 51 12.3
B 15 204 2199 196.77 47 46 10.9
B 5 255 1430 126.49 47 46 10.9
B 12 111 870 75.31 47 46 10.9
C 8 222 475 35.05 45 45 12.3
C 13 61 333 23.48 45 45 12.3
C 7 159 120 6.11 45 45 12.3
D 12 233 3938 323.04 42 40 12.1
D 13 169 1143 91.41 42 40 12.1
D 2 234 917 72.68 42 40 12.1

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