ASTROSAT CZTI

Data Quality Report

Orbit 36154

Creation date: 2022-08-10T22:11:11.124259
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/AS1T04_069T01_9000005158_36154cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36154cztM0_level2_quad_clean.evt
Size (bytes)434,928,96074,934,720
Size414.8 MB 71.5 MB
Events in quadrant A2,794,753484,286
Events in quadrant B3,133,280479,604
Events in quadrant C3,087,006465,264
Events in quadrant D3,773,854445,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119583
B0129812
C0126712
D0149622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5632140.248580%
B5632851.509233%
C5632420.745739%
D56321973.497869%

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 7185 5633 1 1 0.01% 0.02%
B 7185 5633 50 50 0.70% 0.89%
C 7185 5633 30 30 0.42% 0.53%
D 7185 5633 165 165 2.30% 2.93%

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 190222 1425.44 653 640 133.0
A 8 144 39774 294.24 653 640 133.0
A 9 143 19765 143.8 653 640 133.0
B 5 172 420510 3380.69 643 625 124.2
B 4 171 56278 448.09 643 625 124.2
B 0 213 41477 328.92 643 625 124.2
C 15 208 270874 1843.06 624 627 146.6
C 15 214 239140 1626.63 624 627 146.6
C 0 10 130478 885.57 624 627 146.6
D 2 249 358829 2331.39 622 605 153.7
D 1 52 256210 1663.52 622 605 153.7
D 13 249 168687 1093.91 622 605 153.7

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