ASTROSAT CZTI

Data Quality Report

Orbit 41836

Creation date: 2024-06-27T22:33:25.485319
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/AS1A12_099T04_9000005708_41836cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41836cztM0_level2_quad_clean.evt
Size (bytes)357,396,48091,673,280
Size340.8 MB 87.4 MB
Events in quadrant A3,985,681618,036
Events in quadrant B2,441,159655,732
Events in quadrant C3,197,611585,177
Events in quadrant D3,215,145565,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151482
B0104282
C0124502
D0128332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50132354.687812%
B5013130.259326%
C50132835.645322%
D50131022.034710%

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 7046 5014 164 164 2.33% 3.27%
B 7046 5014 5 5 0.07% 0.10%
C 7046 5014 274 274 3.89% 5.46%
D 7046 5014 109 109 1.55% 2.17%

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 14 24 1183895 10073.32 585 573 117.5
A 10 83 508882 4327.1 585 573 117.5
A 2 79 26122 217.49 585 573 117.5
B 0 183 62080 557.87 587 573 110.3
B 3 112 52152 467.82 587 573 110.3
B 12 111 13538 117.59 587 573 110.3
C 0 10 799996 6275.86 554 557 127.4
C 15 214 201494 1577.42 554 557 127.4
C 14 254 28177 216.83 554 557 127.4
D 5 222 648465 4692.8 576 561 138.1
D 2 249 139356 1005.3 576 561 138.1
D 13 249 95260 685.91 576 561 138.1

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