ASTROSAT CZTI

Data Quality Report

Orbit 35650

Creation date: 2022-05-02T22:33:07.916829
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_001T07_9000005104_35650cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35650cztM0_level2_quad_clean.evt
Size (bytes)821,977,92081,486,720
Size783.9 MB 77.7 MB
Events in quadrant A13,812,573252,161
Events in quadrant B3,610,258615,072
Events in quadrant C3,683,983626,177
Events in quadrant D3,420,634592,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447113
B0143042
C0142882
D0136772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54095409100.000000%
B54093887.173230%
C54092735.047144%
D54091432.643742%

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 7201 5410 5320 5320 73.88% 98.34%
B 7201 5410 277 277 3.85% 5.12%
C 7201 5410 210 210 2.92% 3.88%
D 7200 5409 106 106 1.47% 1.96%

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 12485528 193847.12 321 315 64.4
A 10 83 75456 1166.65 321 315 64.4
A 13 6 6153 90.64 321 315 64.4
B 5 172 1098164 9414.47 613 597 116.6
B 15 85 51490 436.54 613 597 116.6
B 12 111 13978 114.78 613 597 116.6
C 0 10 488899 3473.38 614 618 140.6
C 1 23 368364 2615.96 614 618 140.6
C 15 214 222296 1576.91 614 618 140.6
D 12 233 187340 1241.64 623 608 150.4
D 2 249 137749 911.89 623 608 150.4
D 8 195 110639 731.63 623 608 150.4

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