ASTROSAT CZTI

Data Quality Report

Orbit 11371

Creation date: 2024-06-27T16:11:59.011604
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/AS1A04_022T02_9000001662_11371cztM0_level2.evt modeM0/AS1A04_022T02_9000001662_11371cztM0_level2_quad_clean.evt
Size (bytes)241,718,40037,411,200
Size230.5 MB 35.7 MB
Events in quadrant A1,596,848222,330
Events in quadrant B2,171,581221,354
Events in quadrant C1,501,790239,910
Events in quadrant D1,832,880223,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067472
B084811
C064791
D074701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3171642.018291%
B31711795.644907%
C3171501.576790%
D3171983.090508%

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 4096 3171 0 0 0.00% 0.00%
B 4096 3171 75 75 1.83% 2.37%
C 4096 3172 0 0 0.00% 0.00%
D 4096 3172 33 33 0.81% 1.04%

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 15 174 41622 509.58 388 379 80.9
A 13 210 14035 168.73 388 379 80.9
A 1 162 10823 129.04 388 379 80.9
B 3 64 366287 4785.21 385 375 76.5
B 4 239 123132 1605.35 385 375 76.5
B 3 189 102450 1334.88 385 375 76.5
C 13 61 2849 26.94 384 386 91.4
C 14 67 2577 23.97 384 386 91.4
C 14 234 2249 20.38 384 386 91.4
D 10 253 101678 1130.23 373 364 89.6
D 2 120 77925 865.25 373 364 89.6
D 13 249 58405 647.49 373 364 89.6

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