ASTROSAT CZTI

Data Quality Report

Orbit 32853

Creation date: 2024-06-27T20:42:39.208601
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_005T04_9000004742_32853cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32853cztM0_level2_quad_clean.evt
Size (bytes)243,878,40026,884,800
Size232.6 MB 25.6 MB
Events in quadrant A1,205,335164,485
Events in quadrant B1,574,997166,577
Events in quadrant C1,386,996163,382
Events in quadrant D3,048,214140,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051071
B063150
C056290
D0107910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249090.361446%
B2490542.168675%
C2490491.967871%
D249047919.236948%

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 4043 2491 2 2 0.05% 0.08%
B 4043 2491 26 26 0.64% 1.04%
C 4043 2491 32 32 0.79% 1.28%
D 4043 2491 395 395 9.77% 15.86%

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 14 239 22663 358.15 304 297 62.4
A 13 254 4870 73.23 304 297 62.4
A 13 6 3793 55.98 304 297 62.4
B 0 219 175539 2921.74 305 298 60.0
B 5 172 152641 2539.97 305 298 60.0
B 0 230 16481 269.81 305 298 60.0
C 0 10 106575 1549.28 293 295 68.6
C 3 233 88852 1290.93 293 295 68.6
C 1 241 21072 302.87 293 295 68.6
D 12 227 629464 8656.9 279 273 72.7
D 8 195 460150 6327.34 279 273 72.7
D 12 6 322307 4430.79 279 273 72.7

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