ASTROSAT CZTI

Data Quality Report

Orbit 41121

Creation date: 2024-06-27T22:24:44.032529
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_052T04_9000005602_41121cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41121cztM0_level2_quad_clean.evt
Size (bytes)421,637,760107,481,600
Size402.1 MB 102.5 MB
Events in quadrant A3,484,645728,166
Events in quadrant B4,897,345710,680
Events in quadrant C3,244,281702,340
Events in quadrant D3,466,523651,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144473
B0191372
C0137682
D0151552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622120.181214%
B66223695.572335%
C6622360.543642%
D6622600.906071%

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 7964 6623 2 2 0.03% 0.03%
B 7964 6623 230 230 2.89% 3.47%
C 7964 6623 31 31 0.39% 0.47%
D 7964 6623 61 61 0.77% 0.92%

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 583829 3909.49 725 709 149.2
A 2 79 83950 558.08 725 709 149.2
A 13 254 11367 71.46 725 709 149.2
B 0 245 2004732 14483.29 709 688 138.4
B 0 186 64449 460.8 709 688 138.4
B 15 32 28693 202.39 709 688 138.4
C 15 214 285844 1711.74 715 716 166.6
C 0 10 89698 534.19 715 716 166.6
C 14 254 69264 411.52 715 716 166.6
D 2 16 323370 1847.53 711 690 174.7
D 13 249 164121 935.74 711 690 174.7
D 2 249 156274 890.81 711 690 174.7

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