ASTROSAT CZTI

Data Quality Report

Orbit 40313

Creation date: 2024-06-27T22:14:49.485983
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/AS1A12_056T02_9000005538_40313cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40313cztM0_level2_quad_clean.evt
Size (bytes)693,264,960165,951,360
Size661.1 MB 158.3 MB
Events in quadrant A5,804,5031,129,584
Events in quadrant B4,672,6041,159,466
Events in quadrant C5,341,4981,106,490
Events in quadrant D9,095,928959,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229423
B0200272
C0217492
D0336582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96531261.305294%
B9653440.455817%
C96531221.263856%
D96538358.650161%

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 13179 9655 103 103 0.78% 1.07%
B 13179 9655 19 19 0.14% 0.20%
C 13179 9655 97 97 0.74% 1.00%
D 13179 9655 849 849 6.44% 8.79%

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 10 83 733943 3295.83 1105 1086 222.4
A 13 248 648798 2912.91 1105 1086 222.4
A 12 189 72636 321.78 1105 1086 222.4
B 5 255 105631 500.83 1098 1071 208.8
B 4 170 71239 336.1 1098 1071 208.8
B 0 245 70134 330.81 1098 1071 208.8
C 14 254 707029 2832.82 1071 1080 249.2
C 15 214 402619 1611.29 1071 1080 249.2
C 0 10 24062 92.22 1071 1080 249.2
D 12 227 2727684 10663.08 1040 1010 255.7
D 12 79 943354 3685.18 1040 1010 255.7
D 1 47 630638 2462.26 1040 1010 255.7

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