ASTROSAT CZTI

Data Quality Report

Orbit 36363

Creation date: 2022-06-20T00:53:09.749903
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/AS1A11_097T17_9000005194_36363cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36363cztM0_level2_quad_clean.evt
Size (bytes)380,399,04077,028,480
Size362.8 MB 73.5 MB
Events in quadrant A2,522,668500,310
Events in quadrant B2,689,018504,901
Events in quadrant C2,801,974502,929
Events in quadrant D3,169,835477,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105673
B0111152
C0112312
D0126212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949110.222267%
B4949621.252778%
C4949961.939786%
D49491402.828854%

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 7102 4950 4 4 0.06% 0.08%
B 7101 4949 48 48 0.68% 0.97%
C 7102 4950 64 64 0.90% 1.29%
D 7102 4950 154 154 2.17% 3.11%

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 10 83 181956 1529.45 595 585 118.6
A 12 189 16965 138.12 595 585 118.6
A 9 143 10292 81.85 595 585 118.6
B 5 172 197127 1770.28 589 574 111.0
B 5 236 72992 652.24 589 574 111.0
B 0 189 62411 556.94 589 574 111.0
C 0 10 296811 2186.35 586 593 135.5
C 15 214 211731 1558.38 586 593 135.5
C 0 207 6543 43.92 586 593 135.5
D 12 6 552566 3964.2 582 569 139.2
D 2 153 115636 826.36 582 569 139.2
D 2 249 101255 723.08 582 569 139.2

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