ASTROSAT CZTI

Data Quality Report

Orbit 57300

Creation date: 2026-05-01T18:10:00.235166
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/AS1A14_049T03_9000006570_57300cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57300cztM0_level2_quad_clean.evt
Size (bytes)1,378,906,560262,451,520
Size1.3 GB 250.3 MB
Events in quadrant A14,096,7541,675,951
Events in quadrant B9,634,6071,846,207
Events in quadrant C13,395,1281,609,939
Events in quadrant D12,468,9011,523,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544362
B0418182
C0528932
D0498802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1871712406.624993%
B187175212.783566%
C1871811025.887381%
D187189064.840261%

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 19652 18717 932 932 4.74% 4.98%
B 19652 18717 109 109 0.55% 0.58%
C 19653 18719 716 716 3.64% 3.82%
D 19653 18719 594 594 3.02% 3.17%

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 3 14 3697380 7507.72 2003 1952 492.2
A 8 4 968882 1964.44 2003 1952 492.2
A 0 12 840822 1704.27 2003 1952 492.2
B 10 247 487269 1128.63 2001 1923 430.0
B 8 128 360172 833.08 2001 1923 430.0
B 5 185 350880 811.47 2001 1923 430.0
C 15 224 4495802 8562.44 1944 1919 524.8
C 14 254 386741 733.22 1944 1919 524.8
C 6 223 265149 501.55 1944 1919 524.8
D 3 224 2802168 5131.14 1947 1860 545.7
D 8 240 621829 1136.0 1947 1860 545.7
D 3 12 396369 722.88 1947 1860 545.7

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