ASTROSAT CZTI

Data Quality Report

Orbit 20190528_C04_009T06_9000002960_level2

Creation date: 2025-12-01T00:59:12.198581
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/AS1C04_009T06_9000002960cztM0_level2.fits modeM0/AS1C04_009T06_9000002960cztM0_level2_quad_clean.evt
Size (bytes)684,567,360917,510,400
Size652.9 MB 875.0 MB
Events in quadrant A4,145,0706,044,238
Events in quadrant B4,066,9926,070,963
Events in quadrant C4,198,6185,914,558
Events in quadrant D3,312,4184,757,578

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014840
B014840
C014840
D014840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01683810
B01651390
C01525680
D02565280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297625773.531298%
B7297616102.206205%
C7297611561.584082%
D729761130515.491394%

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 85236 72955 0 0 0.00% 0.00%
B 85236 72955 0 0 0.00% 0.00%
C 85236 72968 0 0 0.00% 0.00%
D 85236 72849 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 3957 10.97 1082 1019 267.8
A 7 110 3322 8.6 1082 1019 267.8
A 0 30 3101 7.78 1082 1019 267.8
B 2 9 3200 10.24 1077 1032 211.7
B 2 8 2735 8.04 1077 1032 211.7
B 14 254 2670 7.74 1077 1032 211.7
C 12 241 2942 6.74 1108 1042 281.6
C 12 249 2893 6.57 1108 1042 281.6
C 12 250 2872 6.5 1108 1042 281.6
D 3 14 2475 6.36 949 866 253.2
D 10 189 2450 6.26 949 866 253.2
D 7 3 2422 6.15 949 866 253.2

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