ASTROSAT CZTI

Data Quality Report

Orbit 15735

Creation date: 2024-06-27T17:12:47.782026
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/AS1C03_015T04_9000002328_15735cztM0_level2.evt modeM0/AS1C03_015T04_9000002328_15735cztM0_level2_quad_clean.evt
Size (bytes)413,182,080115,032,960
Size394.0 MB 109.7 MB
Events in quadrant A2,742,322774,409
Events in quadrant B2,864,756796,069
Events in quadrant C3,115,893755,827
Events in quadrant D3,380,277736,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123042
B0125351
C0128971
D0143901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6029140.232211%
B6029410.680046%
C6029570.945430%
D60291372.272350%

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 7130 6031 1 1 0.01% 0.02%
B 7130 6031 4 4 0.06% 0.07%
C 7130 6031 0 0 0.00% 0.00%
D 7130 6031 101 101 1.42% 1.67%

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 15 239 19056 128.25 704 687 143.2
A 9 143 10446 68.14 704 687 143.2
A 0 226 6363 39.63 704 687 143.2
B 4 216 36413 269.42 706 688 132.6
B 5 65 16358 118.17 706 688 132.6
B 12 111 15267 109.95 706 688 132.6
C 3 233 373435 2401.19 671 674 155.2
C 14 238 105157 673.04 671 674 155.2
C 8 222 6649 38.49 671 674 155.2
D 1 52 776208 4539.62 668 651 170.8
D 2 234 25712 146.69 668 651 170.8
D 15 145 19609 110.97 668 651 170.8

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