ASTROSAT CZTI

Data Quality Report

Orbit 48488

Creation date: 2024-09-16T10:54:21.328853
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/AS1A13_081T01_9000006428_48488cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48488cztM0_level2_quad_clean.evt
Size (bytes)457,176,960110,309,760
Size436.0 MB 105.2 MB
Events in quadrant A7,223,441716,419
Events in quadrant B3,142,602758,843
Events in quadrant C2,895,053720,772
Events in quadrant D3,124,517661,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260522
B0146152
C0141422
D0148162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69222293.308292%
B6923600.866676%
C6923290.418894%
D6923420.606673%

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 8987 6923 137 137 1.52% 1.98%
B 8988 6924 15 15 0.17% 0.22%
C 8988 6925 9 9 0.10% 0.13%
D 8988 6925 41 41 0.46% 0.59%

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 4307722 28836.86 720 705 149.4
A 12 189 114558 762.28 720 705 149.4
A 13 254 12588 79.56 720 705 149.4
B 12 16 122975 853.49 731 707 143.3
B 0 186 46453 319.33 731 707 143.3
B 5 255 24847 168.51 731 707 143.3
C 1 3 29187 167.35 719 722 170.1
C 3 233 27005 154.52 719 722 170.1
C 14 254 25584 146.17 719 722 170.1
D 5 171 155832 870.51 712 689 178.2
D 10 199 63367 351.69 712 689 178.2
D 2 249 58617 325.03 712 689 178.2

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