ASTROSAT CZTI

Data Quality Report

Orbit 20161016_G06_115T01_9000000734_level2

Creation date: 2025-11-07T01:16:29.170173
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/AS1G06_115T01_9000000734cztM0_level2.fits modeM0/AS1G06_115T01_9000000734cztM0_level2_quad_clean.evt
Size (bytes)715,515,840774,181,440
Size682.4 MB 738.3 MB
Events in quadrant A4,307,9274,701,833
Events in quadrant B4,148,9744,671,712
Events in quadrant C4,242,7504,559,231
Events in quadrant D3,640,4584,186,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01594340
B01718210
C01618610
D01768780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015830
B015880
C015820
D015880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A776997580.975560%
B7766414631.883756%
C777006120.787645%
D7771516262.092260%

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 89472 78097 0 0 0.00% 0.00%
B 89472 78071 0 0 0.00% 0.00%
C 89472 78094 0 0 0.00% 0.00%
D 89472 78098 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 4181 10.96 1120 1046 286.1
A 7 110 3725 9.36 1120 1046 286.1
A 0 30 3322 7.96 1120 1046 286.1
B 2 9 3543 11.55 1094 1042 216.5
B 12 226 2977 8.94 1094 1042 216.5
B 14 254 2835 8.28 1094 1042 216.5
C 1 81 3052 6.82 1119 1036 295.6
C 1 80 3051 6.82 1119 1036 295.6
C 12 241 3050 6.81 1119 1036 295.6
D 6 231 2805 6.73 1040 948 276.0
D 3 14 2746 6.51 1040 948 276.0
D 3 31 2621 6.06 1040 948 276.0

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