ASTROSAT CZTI

Data Quality Report

Orbit 34887

Creation date: 2022-03-12T09:01:32.981597
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/AS1T04_077T01_9000004994_34887cztM0_level2.evt modeM0/AS1T04_077T01_9000004994_34887cztM0_level2_quad_clean.evt
Size (bytes)282,870,72034,073,280
Size269.8 MB 32.5 MB
Events in quadrant A1,505,125209,130
Events in quadrant B1,817,394212,665
Events in quadrant C1,755,167205,376
Events in quadrant D3,279,145185,145

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063042
B072971
C069721
D0117471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A307870.227420%
B3078321.039636%
C3078361.169591%
D30782778.999350%

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 5201 3079 0 0 0.00% 0.00%
B 5201 3079 17 17 0.33% 0.55%
C 5201 3079 32 32 0.62% 1.04%
D 5201 3079 314 314 6.04% 10.20%

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 29558 374.29 380 372 78.0
A 13 6 5270 62.81 380 372 78.0
A 13 254 5092 60.53 380 372 78.0
B 5 172 134673 1821.35 377 369 73.7
B 0 190 103182 1394.29 377 369 73.7
B 5 200 32542 436.31 377 369 73.7
C 15 214 139164 1626.82 366 369 85.3
C 0 10 108670 1269.4 366 369 85.3
C 0 207 73642 858.83 366 369 85.3
D 1 52 827388 9370.7 357 347 88.3
D 8 195 463876 5251.97 357 347 88.3
D 13 249 241157 2728.47 357 347 88.3

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