ASTROSAT CZTI

Data Quality Report

Orbit 20170804_G07_022T02_9000001434_level2

Creation date: 2025-11-15T19:13:32.315291
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/AS1G07_022T02_9000001434cztM0_level2.fits modeM0/AS1G07_022T02_9000001434cztM0_level2_quad_clean.evt
Size (bytes)940,694,400959,181,120
Size897.1 MB 914.7 MB
Events in quadrant A6,489,6526,645,079
Events in quadrant B6,270,6116,597,216
Events in quadrant C6,463,8296,592,240
Events in quadrant D2,303,1162,259,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02468870
B02607080
C02398740
D01364250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02230
B02240
C02230
D02210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024240
B024440
C023990
D024100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11723211690.997168%
B11731725822.200875%
C1174217010.596997%
D4903522374.562048%

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 167437 121665 0 0 0.00% 0.00%
B 167437 121741 0 0 0.00% 0.00%
C 167437 121933 0 0 0.00% 0.00%
D 64907 51425 0 0 0.00% 0.00%

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 0 29 6495 11.76 1685 1580 417.9
A 7 110 5466 9.3 1685 1580 417.9
A 0 30 4960 8.09 1685 1580 417.9
B 2 9 5335 11.67 1658 1582 321.6
B 14 254 4312 8.49 1658 1582 321.6
B 3 17 4237 8.26 1658 1582 321.6
C 1 80 4813 7.27 1705 1587 443.9
C 1 81 4785 7.2 1705 1587 443.9
C 12 241 4694 7.0 1705 1587 443.9
D 6 231 1726 6.4 656 597 176.4
D 10 189 1674 6.1 656 597 176.4
D 7 3 1653 5.98 656 597 176.4

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