ASTROSAT CZTI

Data Quality Report

Orbit 22911

Creation date: 2024-06-27T18:47:21.925487
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_009T01_9000003382_22911cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22911cztM0_level2_quad_clean.evt
Size (bytes)488,851,200117,912,960
Size466.2 MB 112.5 MB
Events in quadrant A3,369,381787,983
Events in quadrant B3,211,448815,579
Events in quadrant C3,174,731777,148
Events in quadrant D4,604,189733,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143012
B0138822
C0138302
D0183512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65541041.586817%
B6554270.411962%
C6554590.900214%
D65542644.028074%

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 7759 6555 71 71 0.92% 1.08%
B 7759 6555 0 0 0.00% 0.00%
C 7759 6555 0 0 0.00% 0.00%
D 7759 6555 244 244 3.14% 3.72%

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 13 252 279449 1732.84 801 786 160.8
A 13 254 10261 58.92 801 786 160.8
A 0 226 6924 38.17 801 786 160.8
B 0 190 25043 162.52 807 790 149.2
B 12 111 17819 114.11 807 790 149.2
B 11 111 15977 101.77 807 790 149.2
C 14 238 125384 697.02 776 781 178.8
C 7 247 16022 85.26 776 781 178.8
C 8 208 6235 30.51 776 781 178.8
D 1 52 1310700 7063.06 763 739 185.5
D 13 153 229376 1232.77 763 739 185.5
D 12 233 106134 568.27 763 739 185.5

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