ASTROSAT CZTI

Data Quality Report

Orbit 34721

Creation date: 2024-06-27T21:04:17.313725
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/AS1C07_001T01_9000004982_34721cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34721cztM0_level2_quad_clean.evt
Size (bytes)459,800,640102,101,760
Size438.5 MB 97.4 MB
Events in quadrant A2,734,433684,060
Events in quadrant B2,833,550690,568
Events in quadrant C2,790,766694,819
Events in quadrant D5,194,749639,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116843
B0120812
C0116632
D0193872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5472130.237573%
B5472881.608187%
C5472540.986842%
D54723897.108918%

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 7116 5473 5 5 0.07% 0.09%
B 7116 5473 59 59 0.83% 1.08%
C 7116 5473 33 33 0.46% 0.60%
D 7116 5473 374 374 5.26% 6.83%

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 15 169 211451 1693.9 619 607 124.5
A 10 83 49292 391.13 619 607 124.5
A 9 143 31086 244.86 619 607 124.5
B 5 172 281523 2351.84 617 600 119.4
B 4 232 51472 425.89 617 600 119.4
B 4 171 21894 178.27 617 600 119.4
C 15 214 234053 1645.05 609 612 141.9
C 0 10 134830 945.83 609 612 141.9
C 14 67 27894 192.26 609 612 141.9
D 2 250 1183071 7390.52 590 578 160.0
D 8 195 1071504 6693.24 590 578 160.0
D 1 20 193412 1205.2 590 578 160.0

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