ASTROSAT CZTI

Data Quality Report

Orbit 24708

Creation date: 2024-06-27T19:08:59.803175
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/AS1T03_191T01_9000003618_24708cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24708cztM0_level2_quad_clean.evt
Size (bytes)630,576,000144,564,480
Size601.4 MB 137.9 MB
Events in quadrant A3,354,7441,023,518
Events in quadrant B3,426,0151,022,715
Events in quadrant C6,861,907935,612
Events in quadrant D5,027,135955,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139472
B0142181
C0248581
D0193991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6329881.390425%
B6329741.169221%
C63294006.320114%
D63293034.787486%

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 7624 6329 0 0 0.00% 0.00%
B 7624 6329 4 4 0.05% 0.06%
C 7624 6329 12 12 0.16% 0.19%
D 7624 6329 110 110 1.44% 1.74%

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 13 254 10572 56.72 870 858 171.3
A 0 226 7678 39.82 870 858 171.3
A 3 137 6965 35.66 870 858 171.3
B 5 172 37832 236.44 846 828 156.5
B 0 230 29993 186.35 846 828 156.5
B 4 80 17929 109.27 846 828 156.5
C 7 247 3525800 19237.58 808 814 183.2
C 14 238 130055 705.33 808 814 183.2
C 2 16 26445 139.88 808 814 183.2
D 1 52 1510737 7499.26 837 815 201.3
D 12 233 179944 889.67 837 815 201.3
D 8 195 176756 873.84 837 815 201.3

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