ASTROSAT CZTI

Data Quality Report

Orbit 40745

Creation date: 2024-06-27T22:19:54.170211
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_066T01_9000005562_40745cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40745cztM0_level2_quad_clean.evt
Size (bytes)514,794,24084,637,440
Size490.9 MB 80.7 MB
Events in quadrant A3,225,609620,624
Events in quadrant B2,632,021626,613
Events in quadrant C7,482,083452,267
Events in quadrant D5,282,913473,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129573
B0116102
C0259952
D0196292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5573290.520366%
B5573240.430648%
C5573165629.714696%
D5573111219.953346%

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 7186 5574 14 14 0.19% 0.25%
B 7186 5574 9 9 0.13% 0.16%
C 7186 5574 1597 1597 22.22% 28.65%
D 7186 5574 197 197 2.74% 3.53%

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 544252 4222.99 623 609 128.7
A 12 189 99983 771.93 623 609 128.7
A 6 10 85911 662.62 623 609 128.7
B 15 85 77176 628.4 618 599 121.9
B 4 170 35499 286.39 618 599 121.9
B 0 190 33313 268.45 618 599 121.9
C 9 187 5073749 40189.91 536 537 126.2
C 15 214 211501 1671.25 536 537 126.2
C 0 10 56599 444.12 536 537 126.2
D 12 128 2363003 17115.55 557 541 138.0
D 12 191 183039 1322.16 557 541 138.0
D 13 249 139647 1007.79 557 541 138.0

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