ASTROSAT CZTI

Data Quality Report

Orbit 10749

Creation date: 2024-06-27T16:03:15.458672
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/AS1A03_078T01_9000001546_10749cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10749cztM0_level2_quad_clean.evt
Size (bytes)278,904,96025,093,440
Size266.0 MB 23.9 MB
Events in quadrant A1,579,791132,260
Events in quadrant B1,815,074134,855
Events in quadrant C1,497,652132,608
Events in quadrant D3,326,975123,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067751
B074591
C067841
D0120411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3324260.782190%
B3324521.564380%
C3324140.421179%
D332448414.560770%

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 3324 3324 0 0 0.00% 0.00%
B 3324 3324 17 17 0.51% 0.51%
C 3324 3324 0 0 0.00% 0.00%
D 3324 3324 392 392 11.79% 11.79%

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 8 15 35150 421.2 396 387 82.5
A 11 29 6111 69.35 396 387 82.5
A 13 251 4084 44.79 396 387 82.5
B 4 239 145008 1848.89 392 382 78.2
B 4 81 57301 727.65 392 382 78.2
B 0 219 22640 284.54 392 382 78.2
C 14 234 16813 182.37 379 381 90.1
C 13 61 2830 27.18 379 381 90.1
C 3 202 1040 7.31 379 381 90.1
D 2 16 1521414 16914.2 366 355 89.9
D 8 195 145029 1608.78 366 355 89.9
D 1 52 130983 1452.59 366 355 89.9

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