ASTROSAT CZTI

Data Quality Report

Orbit 20190512_A05_104T08_9000002910_level2

Creation date: 2025-11-30T04:13:17.424064
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/AS1A05_104T08_9000002910cztM0_level2.fits modeM0/AS1A05_104T08_9000002910cztM0_level2_quad_clean.evt
Size (bytes)166,783,680135,964,800
Size159.1 MB 129.7 MB
Events in quadrant A1,011,114759,560
Events in quadrant B974,958758,709
Events in quadrant C978,426711,598
Events in quadrant D845,852645,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367150
B0370810
C0379130
D0439300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17995980.544596%
B179951150.639066%
C179952571.428174%
D179955322.956377%

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 20135 17994 0 0 0.00% 0.00%
B 20135 17993 0 0 0.00% 0.00%
C 20135 17994 0 0 0.00% 0.00%
D 20135 17991 0 0 0.00% 0.00%

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 0 29 934 10.3 262 245 66.9
A 7 110 901 9.81 262 245 66.9
A 15 236 764 7.76 262 245 66.9
B 2 9 802 10.64 256 244 52.4
B 14 254 688 8.47 256 244 52.4
B 5 232 664 8.01 256 244 52.4
C 12 241 697 6.64 258 240 68.8
C 12 249 696 6.63 258 240 68.8
C 9 209 670 6.25 258 240 68.8
D 3 14 615 5.99 241 220 65.9
D 10 189 613 5.96 241 220 65.9
D 3 159 604 5.82 241 220 65.9

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