ASTROSAT CZTI

Data Quality Report

Orbit 42314

Creation date: 2024-06-27T22:38:51.550258
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_102T01_9000005794_42314cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42314cztM0_level2_quad_clean.evt
Size (bytes)319,155,84095,368,320
Size304.4 MB 91.0 MB
Events in quadrant A3,063,237656,332
Events in quadrant B2,530,885662,163
Events in quadrant C2,581,442630,533
Events in quadrant D3,233,334574,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123332
B0109232
C0107092
D0130172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198260.500192%
B5198180.346287%
C519870.134667%
D51981563.001154%

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 7231 5199 8 8 0.11% 0.15%
B 7231 5199 12 12 0.17% 0.23%
C 7231 5199 3 3 0.04% 0.06%
D 7231 5199 133 133 1.84% 2.56%

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 580648 4715.48 609 599 123.0
A 7 3 65400 526.8 609 599 123.0
A 13 248 56114 451.31 609 599 123.0
B 15 35 52392 455.92 599 582 113.6
B 15 85 40045 347.27 599 582 113.6
B 5 255 35224 304.85 599 582 113.6
C 15 214 219180 1610.01 593 598 135.8
C 15 111 26946 194.07 593 598 135.8
C 12 249 16590 117.79 593 598 135.8
D 1 52 253193 1772.68 589 572 142.5
D 12 233 178452 1248.21 589 572 142.5
D 13 249 103154 719.83 589 572 142.5

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