ASTROSAT CZTI

Data Quality Report

Orbit 03257

Creation date: 2024-06-27T14:26:48.510061
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/AS1G05_221T01_9000000442_03257cztM0_level2.evt modeM0/AS1G05_221T01_9000000442_03257cztM0_level2_quad_clean.evt
Size (bytes)457,009,92077,947,200
Size435.8 MB 74.3 MB
Events in quadrant A2,971,627483,527
Events in quadrant B3,410,670492,576
Events in quadrant C3,529,025482,464
Events in quadrant D3,501,929462,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129843
B0141322
C0146632
D0148392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289130.206710%
B6289450.715535%
C6289971.542376%
D62891822.893942%

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 7574 6290 0 0 0.00% 0.00%
B 7574 6290 8 8 0.11% 0.13%
C 7574 6290 61 61 0.81% 0.97%
D 7574 6290 153 153 2.02% 2.43%

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 0 118 55499 367.9 739 725 148.9
A 3 1 54072 358.31 739 725 148.9
A 0 226 12821 81.24 739 725 148.9
B 15 204 335464 2337.64 759 742 143.2
B 3 0 49508 340.57 759 742 143.2
B 2 249 40657 278.76 759 742 143.2
C 14 223 464972 2783.67 725 730 166.8
C 1 192 174416 1041.45 725 730 166.8
C 12 175 28936 169.13 725 730 166.8
D 13 223 552207 3235.43 712 692 170.5
D 13 114 79202 460.57 712 692 170.5
D 12 233 72241 419.74 712 692 170.5

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