ASTROSAT CZTI

Data Quality Report

Orbit 32917

Creation date: 2024-06-27T20:43:26.664080
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_005T01_9000004748_32917cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32917cztM0_level2_quad_clean.evt
Size (bytes)530,262,720106,364,160
Size505.7 MB 101.4 MB
Events in quadrant A2,514,843742,291
Events in quadrant B3,665,862743,697
Events in quadrant C2,918,147743,466
Events in quadrant D6,608,030627,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106113
B0140812
C0117012
D0233122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5207110.211254%
B52073737.163434%
C5207851.632418%
D520783716.074515%

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 7360 5208 2 2 0.03% 0.04%
B 7360 5207 256 256 3.48% 4.92%
C 7360 5208 79 79 1.07% 1.52%
D 7360 5207 640 640 8.70% 12.29%

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 13221 99.62 639 629 126.4
A 13 6 10026 74.35 639 629 126.4
A 13 254 9944 73.7 639 629 126.4
B 5 172 741186 6337.45 631 616 116.9
B 15 201 117698 1001.93 631 616 116.9
B 10 246 85983 730.53 631 616 116.9
C 0 10 287719 2000.58 632 639 143.5
C 14 67 46324 318.37 632 639 143.5
C 4 254 43016 295.31 632 639 143.5
D 8 195 2071285 13939.82 576 566 148.5
D 2 250 1416161 9529.61 576 566 148.5
D 12 218 447449 3008.36 576 566 148.5

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