ASTROSAT CZTI

Data Quality Report

Orbit 37783

Creation date: 2024-06-27T21:44:23.382422
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/AS1T05_057T01_9000005346_37783cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37783cztM0_level2_quad_clean.evt
Size (bytes)405,095,04072,460,800
Size386.3 MB 69.1 MB
Events in quadrant A3,453,338464,194
Events in quadrant B2,927,836464,785
Events in quadrant C2,720,691462,367
Events in quadrant D2,818,113443,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136773
B0118972
C0111302
D0116942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5123931.815343%
B51231042.030061%
C5123641.249268%
D5123190.370876%

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 7246 5124 79 79 1.09% 1.54%
B 7246 5124 90 90 1.24% 1.76%
C 7246 5124 64 64 0.88% 1.25%
D 7246 5124 23 23 0.32% 0.45%

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 15 222 739880 6073.51 598 589 121.7
A 10 83 351490 2882.76 598 589 121.7
A 9 143 15579 123.15 598 589 121.7
B 4 81 305625 2715.11 591 576 112.4
B 0 229 63353 558.75 591 576 112.4
B 5 172 60050 529.35 591 576 112.4
C 15 214 234014 1740.15 576 583 134.1
C 0 10 200974 1493.84 576 583 134.1
C 1 23 13308 94.86 576 583 134.1
D 2 250 80216 556.9 582 567 143.0
D 13 249 75574 524.44 582 567 143.0
D 2 153 72358 501.96 582 567 143.0

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