ASTROSAT CZTI

Data Quality Report

Orbit 20220420_T04_095T01_9000005080_level2

Creation date: 2022-04-24T17:30:05.414506
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_095T01_9000005080cztM0_level2_bc.evt modeM0/AS1T04_095T01_9000005080cztM0_level2_quad_clean.evt
Size (bytes)4,575,438,7201,262,854,080
Size4.3 GB 1.2 GB
Events in quadrant A23,713,5888,866,056
Events in quadrant B24,884,1049,020,416
Events in quadrant C60,667,5836,871,502
Events in quadrant D24,425,6178,565,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01805800
B01848860
C03406390
D01757820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02630
B02630
C02630
D02630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014680
B014680
C014680
D014680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7170144706.234223%
B7170131494.391849%
C717012427433.854479%
D7170119322.694523%

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 98221 71717 149 149 0.15% 0.21%
B 98221 71701 247 247 0.25% 0.34%
C 98221 71693 5445 5445 5.54% 7.59%
D 98221 71701 232 232 0.24% 0.32%

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 15 169 8083444 10069.16 3629 3584 802.4
A 10 83 1326389 1648.49 3629 3584 802.4
A 13 6 131759 159.73 3629 3584 802.4
B 5 236 4783668 6581.3 3677 3602 726.3
B 5 172 2509196 3449.76 3677 3602 726.3
B 5 200 1456432 2000.29 3677 3602 726.3
C 4 254 42299196 63149.74 2864 2839 669.8
C 0 207 2497957 3725.29 2864 2839 669.8
C 15 214 2248676 3353.1 2864 2839 669.8
D 8 195 1869498 2174.01 3637 3532 858.3
D 13 249 1449718 1684.93 3637 3532 858.3
D 10 118 1153605 1339.93 3637 3532 858.3

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