ASTROSAT CZTI

Data Quality Report

Orbit 16677

Creation date: 2024-06-27T17:26:00.456392
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/AS1A05_101T09_9000002466_16677cztM0_level2.evt modeM0/AS1A05_101T09_9000002466_16677cztM0_level2_quad_clean.evt
Size (bytes)289,808,64070,018,560
Size276.4 MB 66.8 MB
Events in quadrant A2,094,974468,069
Events in quadrant B1,922,642483,627
Events in quadrant C1,760,195464,579
Events in quadrant D2,749,241445,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085112
B079951
C075111
D0106411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3658872.378349%
B3658290.792783%
C3658260.710771%
D36581353.690541%

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 4524 3660 63 63 1.39% 1.72%
B 4524 3660 2 2 0.04% 0.05%
C 4524 3660 0 0 0.00% 0.00%
D 4524 3660 74 74 1.64% 2.02%

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 15 174 271946 2978.58 442 433 91.2
A 9 143 96983 1059.18 442 433 91.2
A 3 1 15408 164.28 442 433 91.2
B 15 35 97142 1126.04 446 435 85.9
B 0 229 31541 362.19 446 435 85.9
B 0 230 18058 205.2 446 435 85.9
C 14 238 66538 659.07 428 428 100.3
C 3 233 17231 167.52 428 428 100.3
C 7 247 7243 67.94 428 428 100.3
D 1 52 576149 5465.99 428 415 105.3
D 2 16 337539 3200.64 428 415 105.3
D 10 70 129638 1226.84 428 415 105.3

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