ASTROSAT CZTI

Data Quality Report

Orbit 25905

Creation date: 2024-06-27T19:22:39.149437
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/AS1A07_068T01_9000003756_25905cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25905cztM0_level2_quad_clean.evt
Size (bytes)3,571,822,080521,187,840
Size3.3 GB 497.0 MB
Events in quadrant A43,463,9383,088,318
Events in quadrant B19,834,3963,422,378
Events in quadrant C19,034,4423,260,418
Events in quadrant D23,129,5943,248,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01561240
B0844610
C0824840
D0962390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40270777019.294760%
B402714020.998237%
C402724521.122368%
D402729042.244736%

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 44791 40277 6409 6409 14.31% 15.91%
B 44791 40278 57 57 0.13% 0.14%
C 44792 40279 0 0 0.00% 0.00%
D 44792 40279 691 691 1.54% 1.72%

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 0 13 25729503 28089.65 4602 4510 915.8
A 13 254 50650 50.38 4602 4510 915.8
A 3 137 42783 41.79 4602 4510 915.8
B 10 245 336536 360.13 4847 4724 921.4
B 5 172 259448 276.47 4847 4724 921.4
B 12 111 116574 121.4 4847 4724 921.4
C 14 238 743957 682.37 4656 4682 1083.4
C 3 233 160863 144.16 4656 4682 1083.4
C 13 61 32089 25.3 4656 4682 1083.4
D 1 52 4313574 3850.96 4701 4580 1118.9
D 7 238 524611 464.75 4701 4580 1118.9
D 5 223 240237 210.61 4701 4580 1118.9

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