ASTROSAT CZTI

Data Quality Report

Orbit 42968

Creation date: 2024-06-27T22:46:22.818884
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/AS1T05_145T01_9000005836_42968cztM0_level2.fits modeM0/AS1T05_145T01_9000005836_42968cztM0_level2_quad_clean.evt
Size (bytes)634,772,16076,602,240
Size605.4 MB 73.1 MB
Events in quadrant A5,332,243632,620
Events in quadrant B10,531,59086,238
Events in quadrant C2,552,974714,253
Events in quadrant D4,700,076543,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01928982
B034895332
C01042360
D017564277

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489298920.216680%
B4883421086.217489%
C489890.183748%
D488474815.315315%

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 7082 4903 888 888 12.54% 18.11%
B 7081 4892 3986 3986 56.29% 81.48%
C 7081 4907 4 4 0.06% 0.08%
D 7081 4892 770 770 10.87% 15.74%

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 2577529 20335.28 553 542 126.7
A 10 83 548522 4324.17 553 542 126.7
A 15 222 50618 395.16 553 542 126.7
B 4 81 9737223 265815.61 178 174 36.6
B 0 186 48574 1321.29 178 174 36.6
B 4 171 38599 1048.98 178 174 36.6
C 15 214 200016 1369.53 588 597 145.6
C 14 254 45685 309.65 588 597 145.6
C 12 2 7070 44.45 588 597 145.6
D 10 118 1559330 10968.24 537 522 142.1
D 1 47 304939 2141.97 537 522 142.1
D 12 16 233058 1636.19 537 522 142.1

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