ASTROSAT CZTI

Data Quality Report

Orbit 34740

Creation date: 2022-03-03T11:10:11.222493
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_048T04_9000004984_34740cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34740cztM0_level2_quad_clean.evt
Size (bytes)508,668,48063,397,440
Size485.1 MB 60.5 MB
Events in quadrant A2,942,507425,474
Events in quadrant B3,802,248427,898
Events in quadrant C2,843,810432,950
Events in quadrant D5,476,982281,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119183
B0145662
C0111922
D0197952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500380.159904%
B50032484.957026%
C5003230.459724%
D5003104020.787527%

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 7036 5005 2 2 0.03% 0.04%
B 7036 5005 170 170 2.42% 3.40%
C 7036 5005 15 15 0.21% 0.30%
D 7036 5005 717 717 10.19% 14.33%

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 15 169 241174 1843.74 654 642 130.5
A 15 223 91801 698.76 654 642 130.5
A 10 83 47506 359.22 654 642 130.5
B 4 171 539996 4486.96 637 622 120.2
B 5 172 435695 3619.3 637 622 120.2
B 0 190 148995 1234.29 637 622 120.2
C 15 214 214439 1451.83 642 649 147.3
C 0 10 87169 587.55 642 649 147.3
C 0 207 20218 132.89 642 649 147.3
D 10 118 2371344 18041.21 544 532 131.4
D 8 195 784260 5963.95 544 532 131.4
D 2 249 65306 492.91 544 532 131.4

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