ASTROSAT CZTI

Data Quality Report

Orbit 18681

Creation date: 2024-06-27T17:53:36.701180
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_226T06_9000002792_18681cztM0_level2.evt modeM0/AS1A05_226T06_9000002792_18681cztM0_level2_quad_clean.evt
Size (bytes)201,504,96029,980,800
Size192.2 MB 28.6 MB
Events in quadrant A1,385,036179,937
Events in quadrant B1,431,143182,502
Events in quadrant C1,709,825174,337
Events in quadrant D1,387,597173,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057281
B058351
C067671
D058661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2754431.561365%
B2754511.851852%
C2754923.340595%
D2754351.270879%

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 3649 2755 0 0 0.00% 0.00%
B 3649 2755 1 1 0.03% 0.04%
C 3649 2755 14 14 0.38% 0.51%
D 3649 2755 2 2 0.05% 0.07%

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 9 143 7629 99.21 356 349 73.4
A 13 254 4523 56.88 356 349 73.4
A 0 226 3099 37.48 356 349 73.4
B 4 171 13863 193.94 355 347 69.7
B 0 229 10862 150.88 355 347 69.7
B 12 111 8404 115.61 355 347 69.7
C 9 54 307022 3744.45 341 343 81.9
C 14 238 51811 628.41 341 343 81.9
C 3 233 20032 240.4 341 343 81.9
D 1 52 62111 723.21 346 335 85.4
D 7 238 13063 149.01 346 335 85.4
D 2 234 12054 137.19 346 335 85.4

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