ASTROSAT CZTI

Data Quality Report

Orbit 27968

Creation date: 2024-06-27T19:46:34.465323
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_065T03_9000004040_27968cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27968cztM0_level2_quad_clean.evt
Size (bytes)260,251,20029,655,360
Size248.2 MB 28.3 MB
Events in quadrant A1,425,641184,759
Events in quadrant B1,432,337185,209
Events in quadrant C1,446,820177,129
Events in quadrant D3,397,746163,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056990
B057270
C058380
D0118440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26111124.289544%
B26111264.825737%
C26111375.247032%
D261196837.073918%

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 3416 2611 0 0 0.00% 0.00%
B 3416 2611 1 1 0.03% 0.04%
C 3416 2611 0 0 0.00% 0.00%
D 3416 2611 716 716 20.96% 27.42%

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 8 192 3976 48.02 368 360 75.3
A 13 254 3962 47.83 368 360 75.3
A 3 137 3749 45.0 368 360 75.3
B 12 111 9044 118.38 362 352 73.4
B 11 111 8356 109.01 362 352 73.4
B 14 111 7751 100.77 362 352 73.4
C 14 238 54861 642.98 352 353 84.8
C 3 233 18809 217.71 352 353 84.8
C 13 61 2391 24.04 352 353 84.8
D 1 52 2159045 31282.87 281 273 69.0
D 8 195 97696 1411.76 281 273 69.0
D 7 80 70716 1020.79 281 273 69.0

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