ASTROSAT CZTI

Data Quality Report

Orbit 36828

Creation date: 2024-06-27T21:32:08.093830
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/AS1A11_075T01_9000005244_36828cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36828cztM0_level2_quad_clean.evt
Size (bytes)461,263,68040,792,320
Size439.9 MB 38.9 MB
Events in quadrant A1,945,218240,177
Events in quadrant B7,210,028231,034
Events in quadrant C1,995,994248,664
Events in quadrant D2,546,024232,142

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0864
B0864
C0862
D0862

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08557209
B024751573
C08650194
D010703200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A400790.224607%
B3977184546.391753%
C4012110.274177%
D40112175.410122%

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 6088 4036 2 2 0.03% 0.05%
B 6070 4016 1802 1802 29.69% 44.87%
C 6112 4053 9 9 0.15% 0.22%
D 6086 4040 196 196 3.22% 4.85%

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 10 83 139296 1509.24 449 439 92.0
A 9 143 52043 560.88 449 439 92.0
A 13 6 13104 137.66 449 439 92.0
B 12 1 5562783 84730.32 341 333 65.6
B 0 229 45803 692.62 341 333 65.6
B 5 200 42029 635.14 341 333 65.6
C 15 214 170404 1682.79 434 438 101.0
C 0 207 73122 719.63 434 438 101.0
C 0 10 20028 193.96 434 438 101.0
D 1 20 337102 3248.05 425 413 103.7
D 12 233 231995 2234.08 425 413 103.7
D 13 249 146645 1410.7 425 413 103.7

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