ASTROSAT CZTI

Data Quality Report

Orbit 53713

Creation date: 2025-09-02T14:45:45.606669
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_022T04_9000006506_53713cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53713cztM0_level2_quad_clean.evt
Size (bytes)3,471,042,240265,806,720
Size3.2 GB 253.5 MB
Events in quadrant A47,048,250961,902
Events in quadrant B13,347,2532,477,672
Events in quadrant C45,999,675912,827
Events in quadrant D20,183,7801,989,047

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01569123
B0574913
C01536425
D0775093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247811474359.493160%
B247823231.303365%
C247811507060.812719%
D2478119918.034381%

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 26016 24784 13413 13413 51.56% 54.12%
B 26017 24785 100 100 0.38% 0.40%
C 26016 24782 12356 12356 47.49% 49.86%
D 26016 24784 1865 1865 7.17% 7.53%

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 3 63 26224095 60824.57 1748 1704 431.1
A 3 78 10408613 24139.51 1748 1704 431.1
A 15 174 777702 1799.98 1748 1704 431.1
B 7 0 1481178 2665.56 2615 2520 554.7
B 0 213 447241 801.69 2615 2520 554.7
B 5 185 286386 511.72 2615 2520 554.7
C 1 241 19716062 42543.15 1674 1657 463.4
C 15 224 7952013 17156.65 1674 1657 463.4
C 15 219 4020875 8673.36 1674 1657 463.4
D 8 176 2222873 3110.61 2511 2406 713.8
D 2 62 1476420 2064.92 2511 2406 713.8
D 7 70 1417377 1982.21 2511 2406 713.8

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