ASTROSAT CZTI

Data Quality Report

Orbit 41404

Creation date: 2024-06-27T22:28:35.991962
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_035T01_9000005666_41404cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41404cztM0_level2_quad_clean.evt
Size (bytes)311,993,28084,188,160
Size297.5 MB 80.3 MB
Events in quadrant A2,811,406568,528
Events in quadrant B2,740,828573,827
Events in quadrant C2,992,530536,758
Events in quadrant D2,613,768518,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114593
B0116332
C0118592
D0112272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5008140.279553%
B50081272.535942%
C50082545.071885%
D5008521.038339%

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 9223 5010 7 7 0.08% 0.14%
B 9223 5010 82 82 0.89% 1.64%
C 9223 5010 244 244 2.65% 4.87%
D 9223 5010 35 35 0.38% 0.70%

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 490521 4283.78 557 546 114.4
A 13 248 122657 1067.6 557 546 114.4
A 12 189 31644 271.89 557 546 114.4
B 5 255 501826 4710.14 549 535 106.4
B 0 190 55448 515.96 549 535 106.4
B 0 229 20706 189.53 549 535 106.4
C 0 10 681492 5443.74 534 537 125.1
C 15 214 222431 1773.88 534 537 125.1
C 13 61 3537 23.98 534 537 125.1
D 1 52 279505 2069.56 551 537 134.8
D 13 249 157656 1165.61 551 537 134.8
D 12 79 41125 301.11 551 537 134.8

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