ASTROSAT CZTI

Data Quality Report

Orbit 55097

Creation date: 2025-12-04T11:37:59.805140
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_025T01_9000006530_55097cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55097cztM0_level2_quad_clean.evt
Size (bytes)1,660,985,280376,266,240
Size1.5 GB 358.8 MB
Events in quadrant A11,975,7672,484,352
Events in quadrant B12,114,2832,684,416
Events in quadrant C16,331,7152,343,291
Events in quadrant D19,062,9642,103,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580503123
B0574222882
C0704093326
D0787253909

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054824
B055030
C054931
D054931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258542170.839329%
B258822240.865466%
C258255862.269119%
D2580216956.569258%

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 57184 26064 118 118 0.21% 0.45%
B 57184 26082 39 39 0.07% 0.15%
C 57184 26070 592 592 1.04% 2.27%
D 57184 26040 1646 1646 2.88% 6.32%

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 61 433883 623.21 2829 2762 691.8
A 0 8 300759 430.77 2829 2762 691.8
A 4 3 143895 204.02 2829 2762 691.8
B 7 0 451687 749.41 2796 2694 599.1
B 5 185 263616 435.5 2796 2694 599.1
B 0 182 99885 162.22 2796 2694 599.1
C 9 38 3158416 4232.9 2739 2718 745.5
C 6 223 658225 879.26 2739 2718 745.5
C 13 3 646749 863.87 2739 2718 745.5
D 2 249 2965657 3934.19 2667 2554 753.2
D 9 1 882595 1168.45 2667 2554 753.2
D 6 239 665679 880.45 2667 2554 753.2

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