ASTROSAT CZTI

Data Quality Report

Orbit 37207

Creation date: 2024-06-27T21:36:55.153097
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_079T01_9000005284_37207cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37207cztM0_level2_quad_clean.evt
Size (bytes)430,381,44069,572,160
Size410.4 MB 66.3 MB
Events in quadrant A2,897,068434,426
Events in quadrant B3,541,634429,846
Events in quadrant C2,975,322431,795
Events in quadrant D3,230,723409,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123103
B0144182
C0123402
D0134842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5734260.453436%
B57341121.953261%
C5734330.575514%
D57341152.005581%

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 7077 5735 13 13 0.18% 0.23%
B 7077 5735 58 58 0.82% 1.01%
C 7077 5735 22 22 0.31% 0.38%
D 7077 5735 91 91 1.29% 1.59%

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 277628 2089.26 655 643 132.6
A 13 248 38926 288.76 655 643 132.6
A 9 143 23083 169.26 655 643 132.6
B 0 213 460419 3681.28 645 626 124.9
B 5 172 406885 3252.66 645 626 124.9
B 4 232 43189 340.77 645 626 124.9
C 15 214 244797 1627.27 639 643 150.0
C 0 10 107386 711.43 639 643 150.0
C 14 254 56237 370.53 639 643 150.0
D 2 249 417316 2674.94 636 622 155.8
D 13 249 170993 1093.69 636 622 155.8
D 2 153 43069 272.49 636 622 155.8

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