ASTROSAT CZTI

Data Quality Report

Orbit 34726

Creation date: 2022-03-02T17:53:49.342432
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_34726cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34726cztM0_level2_quad_clean.evt
Size (bytes)423,504,00086,304,960
Size403.9 MB 82.3 MB
Events in quadrant A2,795,608587,220
Events in quadrant B2,405,015602,725
Events in quadrant C2,465,383595,594
Events in quadrant D4,848,292505,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012044938
B0113401371
C010830886
D0203962787

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01044
B01039
C01044
D010412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4617691.494477%
B4572270.590551%
C4639310.668247%
D445361213.743544%

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 7163 4830 52 52 0.73% 1.08%
B 7163 4788 10 10 0.14% 0.21%
C 7163 4820 21 21 0.29% 0.44%
D 7163 4696 565 565 7.89% 12.03%

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 511664 4606.85 558 549 110.9
A 10 83 46686 415.85 558 549 110.9
A 7 48 40058 356.11 558 549 110.9
B 5 172 105528 1020.93 552 540 102.8
B 5 255 48070 462.19 552 540 102.8
B 0 155 27006 257.36 552 540 102.8
C 15 214 201204 1634.25 539 544 122.8
C 0 10 110071 892.03 539 544 122.8
C 14 67 32413 259.55 539 544 122.8
D 2 250 1521709 13018.77 487 474 116.8
D 8 195 539125 4609.79 487 474 116.8
D 2 249 299949 2562.92 487 474 116.8

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