ASTROSAT CZTI

Data Quality Report

Orbit 33780

Creation date: 2024-06-27T20:52:34.959017
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_086T01_9000004820_33780cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33780cztM0_level2_quad_clean.evt
Size (bytes)688,956,48059,083,200
Size657.0 MB 56.3 MB
Events in quadrant A5,982,429348,191
Events in quadrant B2,983,100375,002
Events in quadrant C3,240,075370,861
Events in quadrant D8,307,338328,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214812
B0121181
C0125861
D0283271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523470113.393198%
B5234901.719526%
C52341402.674818%
D5234111221.245701%

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 6847 5235 502 502 7.33% 9.59%
B 6847 5235 51 51 0.74% 0.97%
C 6847 5235 134 134 1.96% 2.56%
D 6847 5235 1212 1212 17.70% 23.15%

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 1996585 16954.57 586 575 117.7
A 15 237 1691923 14366.7 586 575 117.7
A 13 6 10915 87.83 586 575 117.7
B 5 172 270172 2268.04 618 603 118.9
B 0 190 52453 436.25 618 603 118.9
B 0 197 52395 435.76 618 603 118.9
C 3 233 551172 3978.95 601 607 138.4
C 15 214 225128 1622.62 601 607 138.4
C 0 10 61043 436.77 601 607 138.4
D 12 235 4017839 27985.84 579 562 143.5
D 8 195 1334520 9292.85 579 562 143.5
D 2 250 232718 1617.28 579 562 143.5

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