ASTROSAT CZTI

Data Quality Report

Orbit 23217

Creation date: 2024-06-27T18:51:23.933006
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/AS1A08_008T02_9000003430_23217cztM0_level2.evt modeM0/AS1A08_008T02_9000003430_23217cztM0_level2_quad_clean.evt
Size (bytes)504,578,880130,685,760
Size481.2 MB 124.6 MB
Events in quadrant A3,226,611917,115
Events in quadrant B3,476,037928,914
Events in quadrant C3,905,773848,296
Events in quadrant D4,245,756824,529

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136392
B0144872
C0157193
D0169532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296460.730623%
B6297560.889312%
C62962043.240152%
D62962143.398983%

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 7656 6297 0 0 0.00% 0.00%
B 7657 6298 2 2 0.03% 0.03%
C 7656 6297 66 66 0.86% 1.05%
D 7656 6297 175 175 2.29% 2.78%

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 10206 56.53 835 821 166.0
A 0 226 7386 39.55 835 821 166.0
A 3 137 6539 34.44 835 821 166.0
B 0 190 148471 945.72 834 815 156.1
B 15 32 29255 182.16 834 815 156.1
B 7 202 22119 136.45 834 815 156.1
C 2 16 266021 1514.81 773 780 175.1
C 7 247 264044 1503.52 773 780 175.1
C 0 10 233531 1329.26 773 780 175.1
D 7 238 528122 2780.1 783 763 189.7
D 13 153 223708 1175.31 783 763 189.7
D 1 52 144696 758.78 783 763 189.7

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