ASTROSAT CZTI

Data Quality Report

Orbit 41783

Creation date: 2024-06-27T22:32:49.170423
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_052T04_9000005700_41783cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41783cztM0_level2_quad_clean.evt
Size (bytes)343,526,40092,952,000
Size327.6 MB 88.6 MB
Events in quadrant A3,141,061632,422
Events in quadrant B3,129,663628,980
Events in quadrant C3,167,319587,231
Events in quadrant D2,833,026566,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128303
B0133362
C0131222
D0126942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5715230.402450%
B57151212.117235%
C57152324.059493%
D5715741.294838%

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 7178 5716 11 11 0.15% 0.19%
B 7178 5716 70 70 0.98% 1.22%
C 7178 5716 224 224 3.12% 3.92%
D 7178 5716 79 79 1.10% 1.38%

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 575314 4505.15 618 605 127.6
A 15 223 148001 1155.44 618 605 127.6
A 2 79 19793 150.41 618 605 127.6
B 0 190 366207 3095.9 610 592 118.1
B 5 32 132193 1114.35 610 592 118.1
B 4 171 103061 867.67 610 592 118.1
C 0 10 643806 4722.24 584 587 136.2
C 15 214 226747 1660.37 584 587 136.2
C 15 111 10720 74.39 584 587 136.2
D 13 249 215915 1457.61 601 582 147.7
D 12 233 88214 593.19 601 582 147.7
D 9 19 70986 476.57 601 582 147.7

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