ASTROSAT CZTI

Data Quality Report

Orbit 33657

Creation date: 2024-06-27T20:51:10.789334
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_076T01_9000004810_33657cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33657cztM0_level2_quad_clean.evt
Size (bytes)489,625,92088,467,840
Size466.9 MB 84.4 MB
Events in quadrant A3,340,845583,134
Events in quadrant B3,781,386588,873
Events in quadrant C3,163,880600,944
Events in quadrant D4,205,567557,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132632
B0145281
C0125541
D0162021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49751943.899497%
B49753867.758794%
C4975931.869347%
D49751913.839196%

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 7038 4976 187 187 2.66% 3.76%
B 7038 4976 344 344 4.89% 6.91%
C 7038 4976 68 68 0.97% 1.37%
D 7038 4976 173 173 2.46% 3.48%

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 15 237 851763 7071.78 594 584 120.4
A 15 169 158165 1309.22 594 584 120.4
A 13 6 21330 172.36 594 584 120.4
B 5 172 1264343 11245.0 586 570 112.4
B 0 189 57468 506.28 586 570 112.4
B 5 200 56855 500.82 586 570 112.4
C 3 233 313159 2291.59 590 597 136.4
C 0 10 235405 1721.52 590 597 136.4
C 15 214 230369 1684.6 590 597 136.4
D 8 195 968594 6257.05 573 563 154.7
D 12 6 253636 1635.79 573 563 154.7
D 10 118 232333 1498.09 573 563 154.7

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