ASTROSAT CZTI

Data Quality Report

Orbit 20160223_T01_072T04_9000000342_level2

Creation date: 2025-10-27T21:25:49.633223
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/AS1T01_072T04_9000000342cztM0_level2.fits modeM0/AS1T01_072T04_9000000342cztM0_level2_quad_clean.evt
Size (bytes)537,088,320530,421,120
Size512.2 MB 505.8 MB
Events in quadrant A3,511,7723,445,852
Events in quadrant B3,409,6003,674,363
Events in quadrant C1,334,074738,638
Events in quadrant D2,603,0582,844,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02329890
B02192950
C05305770
D02703270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015780
B015780
C015780
D015780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0150
C0150
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780941253516.051169%
B780421013612.987878%
C782556107278.042298%
D781321646521.073312%

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 91324 77986 0 0 0.00% 0.00%
B 91324 77943 0 0 0.00% 0.00%
C 91325 62239 0 0 0.00% 0.00%
D 91324 73416 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 5 61 4212 13.58 933 867 246.3
A 0 29 3479 10.6 933 867 246.3
A 14 188 3270 9.76 933 867 246.3
B 2 61 3624 15.06 916 868 183.0
B 2 9 3115 12.28 916 868 183.0
B 1 226 2783 10.46 916 868 183.0
C 0 226 1599 9.74 365 331 130.1
C 13 226 1546 9.34 365 331 130.1
C 0 61 1285 7.33 365 331 130.1
D 11 82 2089 6.83 763 689 205.1
D 8 61 2081 6.79 763 689 205.1
D 6 231 2058 6.68 763 689 205.1

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