ASTROSAT CZTI

Data Quality Report

Orbit 35902

Creation date: 2022-06-08T23:47:52.272943
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/AS1A11_080T01_9000005146_35902cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35902cztM0_level2_quad_clean.evt
Size (bytes)477,967,68073,445,760
Size455.8 MB 70.0 MB
Events in quadrant A3,077,789485,783
Events in quadrant B3,101,128472,384
Events in quadrant C3,025,869472,679
Events in quadrant D4,900,568411,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123513
B0124492
C0119412
D0180252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5445120.220386%
B54451352.479339%
C54451122.056933%
D544570412.929293%

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 9300 5447 0 0 0.00% 0.00%
B 9300 5447 96 96 1.03% 1.76%
C 9300 5447 81 81 0.87% 1.49%
D 9300 5447 630 630 6.77% 11.57%

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 328706 2446.57 663 653 134.1
A 10 83 169184 1256.88 663 653 134.1
A 10 255 9653 67.12 663 653 134.1
B 5 255 313271 2528.85 647 632 123.6
B 5 172 142743 1149.5 647 632 123.6
B 0 213 38156 303.52 647 632 123.6
C 0 10 251064 1695.68 634 641 147.7
C 15 214 228823 1545.08 634 641 147.7
C 9 69 72044 483.49 634 641 147.7
D 13 153 1196833 8057.07 602 586 148.5
D 12 128 356670 2398.33 602 586 148.5
D 8 195 249011 1673.21 602 586 148.5

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