ASTROSAT CZTI

Data Quality Report

Orbit 32827

Creation date: 2024-06-27T20:42:26.971060
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/AS1C06_002T09_9000004734_32827cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32827cztM0_level2_quad_clean.evt
Size (bytes)496,537,92080,550,720
Size473.5 MB 76.8 MB
Events in quadrant A3,045,226522,705
Events in quadrant B3,138,322526,997
Events in quadrant C2,716,742530,949
Events in quadrant D5,768,552477,322

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126063
B0128382
C0115672
D0210292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5447741.358546%
B54471142.092895%
C5447320.587479%
D54474788.775473%

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 7270 5448 48 48 0.66% 0.88%
B 7270 5448 68 68 0.94% 1.25%
C 7270 5448 21 21 0.29% 0.39%
D 7270 5448 413 413 5.68% 7.58%

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 14 238 348979 2729.91 643 633 127.6
A 12 16 70977 551.27 643 633 127.6
A 14 63 66713 517.85 643 633 127.6
B 5 172 376293 3084.79 648 633 121.8
B 0 219 61481 499.66 648 633 121.8
B 15 54 49536 401.57 648 633 121.8
C 0 10 124756 835.05 638 643 148.6
C 14 67 41523 275.05 638 643 148.6
C 1 23 28077 184.58 638 643 148.6
D 8 195 1287800 8881.69 604 592 144.9
D 12 6 823889 5680.72 604 592 144.9
D 2 250 456442 3145.35 604 592 144.9

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