ASTROSAT CZTI

Data Quality Report

Orbit 36037

Creation date: 2022-08-09T23:04:54.714301
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/AS1T04_069T01_9000005158_36037cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36037cztM0_level2_quad_clean.evt
Size (bytes)580,973,76082,077,120
Size554.1 MB 78.3 MB
Events in quadrant A2,972,080536,980
Events in quadrant B4,769,779515,543
Events in quadrant C5,587,901498,542
Events in quadrant D3,840,487496,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129123
B0183662
C0207442
D0156692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263100.159668%
B62635649.005269%
C626369911.160786%
D62631512.410985%

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 7576 6264 0 0 0.00% 0.00%
B 7576 6264 362 362 4.78% 5.78%
C 7576 6264 579 579 7.64% 9.24%
D 7576 6264 119 119 1.57% 1.90%

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 194081 1321.22 718 705 146.4
A 13 254 9001 56.68 718 705 146.4
A 3 137 7472 46.23 718 705 146.4
B 5 236 1640641 12432.04 681 661 131.9
B 0 190 220073 1663.27 681 661 131.9
B 0 213 87571 658.83 681 661 131.9
C 9 187 2507359 16271.64 654 659 154.1
C 15 214 249577 1615.79 654 659 154.1
C 0 207 160781 1039.39 654 659 154.1
D 8 230 315460 1863.54 684 664 168.9
D 10 118 309246 1826.76 684 664 168.9
D 12 227 104312 613.58 684 664 168.9

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