ASTROSAT CZTI

Data Quality Report

Orbit 41512

Creation date: 2024-06-27T22:29:55.683667
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/AS1A12_035T02_9000005676_41512cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41512cztM0_level2_quad_clean.evt
Size (bytes)1,535,872,320410,437,440
Size1.4 GB 391.4 MB
Events in quadrant A14,387,7822,733,959
Events in quadrant B12,128,8652,809,329
Events in quadrant C13,760,9372,652,361
Events in quadrant D14,608,0462,482,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577507
B0535536
C0570246
D0612066

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254232781.093498%
B25423770.302875%
C254236422.525272%
D254235452.143728%

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 32377 25428 235 235 0.73% 0.92%
B 32377 25428 33 33 0.10% 0.13%
C 32377 25428 627 627 1.94% 2.47%
D 32377 25428 486 486 1.50% 1.91%

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 10 83 2154131 3773.05 2793 2732 570.2
A 0 8 845684 1478.34 2793 2732 570.2
A 13 248 441831 770.08 2793 2732 570.2
B 5 255 615346 1155.01 2772 2698 530.4
B 0 190 436613 818.05 2772 2698 530.4
B 12 111 69256 125.48 2772 2698 530.4
C 0 10 1335998 2151.5 2690 2706 619.7
C 15 214 1050166 1690.26 2690 2706 619.7
C 14 254 765936 1231.61 2690 2706 619.7
D 1 52 1064885 1603.86 2720 2647 662.3
D 2 249 683799 1028.46 2720 2647 662.3
D 12 128 554363 833.03 2720 2647 662.3

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