ASTROSAT CZTI

Data Quality Report

Orbit 33525

Creation date: 2024-06-27T20:49:45.289497
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_037T01_9000004806_33525cztM0_level2.evt modeM0/AS1A11_037T01_9000004806_33525cztM0_level2_quad_clean.evt
Size (bytes)486,538,56097,392,960
Size464.0 MB 92.9 MB
Events in quadrant A2,439,767654,408
Events in quadrant B3,916,717665,247
Events in quadrant C3,396,350655,197
Events in quadrant D4,628,495609,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105263
B0150012
C0133402
D0174482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521250.095932%
B52123196.120491%
C52121182.264006%
D52121573.012279%

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 7336 5213 0 0 0.00% 0.00%
B 7336 5213 230 230 3.14% 4.41%
C 7336 5213 102 102 1.39% 1.96%
D 7336 5213 149 149 2.03% 2.86%

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 13 254 9655 72.8 628 618 124.1
A 13 6 5782 41.6 628 618 124.1
A 10 83 5710 41.02 628 618 124.1
B 5 172 660611 5681.7 625 610 116.2
B 4 170 258302 2218.37 625 610 116.2
B 5 255 220541 1893.3 625 610 116.2
C 15 214 241305 1697.9 627 633 141.7
C 0 10 220286 1549.61 627 633 141.7
C 1 23 142372 999.94 627 633 141.7
D 8 195 1485555 9047.82 609 598 164.1
D 13 249 290657 1767.32 609 598 164.1
D 14 52 207856 1262.82 609 598 164.1

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