ASTROSAT CZTI

Data Quality Report

Orbit 26151

Creation date: 2024-06-27T19:25:25.477429
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/AS1A09_138T04_9000003776_26151cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26151cztM0_level2_quad_clean.evt
Size (bytes)543,695,04092,554,560
Size518.5 MB 88.3 MB
Events in quadrant A5,060,091580,653
Events in quadrant B3,374,108607,493
Events in quadrant C3,443,073575,339
Events in quadrant D4,133,654571,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194850
B0142160
C0142720
D0167070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67106299.374069%
B6710640.953800%
C6710971.445604%
D67101151.713860%

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 7720 6710 497 497 6.44% 7.41%
B 7720 6710 2 2 0.03% 0.03%
C 7720 6710 8 8 0.10% 0.12%
D 7720 6710 50 50 0.65% 0.75%

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 13 1937259 11913.32 810 791 162.5
A 13 254 10721 61.09 810 791 162.5
A 3 137 7505 41.31 810 791 162.5
B 0 190 64212 395.28 840 819 160.4
B 12 111 19505 116.51 840 819 160.4
B 11 111 17448 103.69 840 819 160.4
C 14 238 130718 684.74 813 816 189.7
C 3 233 122220 639.95 813 816 189.7
C 2 16 12683 62.55 813 816 189.7
D 1 52 810808 4121.49 819 802 196.5
D 8 195 133202 673.68 819 802 196.5
D 10 103 29302 145.01 819 802 196.5

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