ASTROSAT CZTI

Data Quality Report

Orbit 21019

Creation date: 2024-06-27T18:22:34.526060
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/AS1A05_075T06_9000003104_21019cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21019cztM0_level2_quad_clean.evt
Size (bytes)479,468,16085,812,480
Size457.3 MB 81.8 MB
Events in quadrant A3,173,425553,229
Events in quadrant B4,170,305544,439
Events in quadrant C3,205,453530,340
Events in quadrant D3,532,039519,085

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133482
B0163702
C0134482
D0147202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470771.190108%
B64702684.142195%
C6470961.483771%
D64701021.576507%

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 7560 6471 0 0 0.00% 0.00%
B 7560 6471 105 105 1.39% 1.62%
C 7560 6471 4 4 0.05% 0.06%
D 7560 6471 43 43 0.57% 0.66%

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 10 229 7917 42.99 821 805 165.4
A 0 226 7138 38.28 821 805 165.4
A 3 137 6399 33.82 821 805 165.4
B 0 182 617055 3978.21 812 790 154.9
B 7 220 254485 1637.69 812 790 154.9
B 0 189 25045 156.57 812 790 154.9
C 14 238 124884 685.83 782 787 180.9
C 9 54 25503 136.6 782 787 180.9
C 13 250 8474 42.48 782 787 180.9
D 1 52 231375 1206.93 793 770 191.1
D 5 32 127507 663.31 793 770 191.1
D 7 238 113474 589.86 793 770 191.1

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