ASTROSAT CZTI

Data Quality Report

Orbit 20200629_A09_008T06_9000003748_level2

Creation date: 2021-01-10T05:48:55.073319
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_008T06_9000003748cztM0_level2_bc.evt modeM0/AS1A09_008T06_9000003748cztM0_level2_quad_clean.evt
Size (bytes)227,044,80090,627,840
Size216.5 MB 86.4 MB
Events in quadrant A1,281,760591,313
Events in quadrant B1,404,656612,039
Events in quadrant C1,301,931589,799
Events in quadrant D2,505,020566,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118960
B0124800
C0123500
D0158030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5502430.781534%
B5502881.599418%
C55021162.108324%
D55022845.161759%

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 6656 5502 0 0 0.00% 0.00%
B 6656 5502 0 0 0.00% 0.00%
C 6656 5502 0 0 0.00% 0.00%
D 6656 5501 25 25 0.38% 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 6 16 24967 351.85 324 319 70.1
A 13 254 8469 116.34 324 319 70.1
A 13 220 2372 29.31 324 319 70.1
B 3 112 36132 563.16 332 325 63.6
B 4 171 30597 476.11 332 325 63.6
B 0 190 23916 371.03 332 325 63.6
C 3 233 61964 807.77 321 320 76.3
C 0 10 4290 52.02 321 320 76.3
C 1 16 1956 21.43 321 320 76.3
D 1 52 1010417 12266.9 315 306 82.3
D 7 80 209595 2541.63 315 306 82.3
D 13 104 30361 364.99 315 306 82.3

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