ASTROSAT CZTI

Data Quality Report

Orbit 41323

Creation date: 2024-06-27T22:27:34.985514
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_037T01_9000005652_41323cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41323cztM0_level2_quad_clean.evt
Size (bytes)175,158,72051,001,920
Size167.0 MB 48.6 MB
Events in quadrant A1,509,153341,215
Events in quadrant B1,494,983344,266
Events in quadrant C1,406,759331,440
Events in quadrant D1,825,766303,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064711
B066240
C063360
D077520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314760.190658%
B3147160.508421%
C314710.031776%
D3147812.573880%

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 3147 3147 1 1 0.03% 0.03%
B 3147 3147 6 6 0.19% 0.19%
C 3147 3147 0 0 0.00% 0.00%
D 3147 3147 81 81 2.57% 2.57%

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 180830 2525.62 336 328 71.5
A 2 79 19004 261.32 336 328 71.5
A 12 189 12545 170.94 336 328 71.5
B 0 190 103044 1549.85 334 325 66.3
B 5 255 49985 749.28 334 325 66.3
B 0 155 11655 170.95 334 325 66.3
C 15 214 127942 1636.67 326 329 78.0
C 0 10 4151 49.02 326 329 78.0
C 13 61 2132 23.12 326 329 78.0
D 2 249 254415 3182.4 320 311 79.8
D 1 52 172809 2160.36 320 311 79.8
D 6 112 44484 553.22 320 311 79.8

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