ASTROSAT CZTI

Data Quality Report

Orbit 49834

Creation date: 2024-12-15T12:07:54.503318
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/AS1A13_037T01_9000006440_49834cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49834cztM0_level2_quad_clean.evt
Size (bytes)3,339,803,520128,615,040
Size3.1 GB 122.7 MB
Events in quadrant A36,690,585744,338
Events in quadrant B11,497,8401,827,258
Events in quadrant C32,669,50811,672
Events in quadrant D41,331,66423,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01219394
B0470994
C01100824
D01355424

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186691099758.905137%
B186706763.620782%
C186701857799.501875%
D186701848298.993037%

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 19839 18670 9519 9519 47.98% 50.99%
B 19840 18674 280 280 1.41% 1.50%
C 19840 18666 6348 6348 32.00% 34.01%
D 19839 18672 13347 13347 67.28% 71.48%

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 3 84 9530812 25358.73 1360 1316 375.8
A 4 4 5923075 15758.26 1360 1316 375.8
A 0 98 5403485 14375.59 1360 1316 375.8
B 7 0 1179919 2781.0 1987 1920 423.6
B 0 229 678240 1596.65 1987 1920 423.6
B 4 206 575980 1355.23 1987 1920 423.6
C 15 230 8845709 82649.4 276 267 107.0
C 15 197 4155944 38829.51 276 267 107.0
C 15 179 2592048 24216.9 276 267 107.0
D 8 129 7456096 38490.49 466 437 193.7
D 7 61 5198618 26836.06 466 437 193.7
D 7 126 5041248 26023.63 466 437 193.7

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