ASTROSAT CZTI

Data Quality Report

Orbit 20160814_G05_212T01_9000000600_level2

Creation date: 2025-11-04T20:02:18.503192
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/AS1G05_212T01_9000000600cztM0_level2.fits modeM0/AS1G05_212T01_9000000600cztM0_level2_quad_clean.evt
Size (bytes)325,540,800376,401,600
Size310.5 MB 359.0 MB
Events in quadrant A1,956,2242,357,734
Events in quadrant B1,897,2442,354,274
Events in quadrant C1,864,2182,149,891
Events in quadrant D1,643,0882,040,630

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0744380
B0817550
C01034680
D01018480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07380
B07380
C07380
D07380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363652110.580228%
B363645961.638984%
C3636717734.875299%
D3636213873.814422%

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 42165 36370 0 0 0.00% 0.00%
B 42165 36368 0 0 0.00% 0.00%
C 42165 36179 0 0 0.00% 0.00%
D 42165 36367 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 1870 10.74 509 477 129.7
A 7 110 1642 8.98 509 477 129.7
A 9 19 1469 7.65 509 477 129.7
B 2 9 1643 11.55 501 478 100.9
B 12 226 1426 9.4 501 478 100.9
B 5 128 1273 7.88 501 478 100.9
C 1 80 1388 7.15 492 458 130.0
C 1 81 1327 6.68 492 458 130.0
C 9 188 1325 6.67 492 458 130.0
D 11 82 1283 6.81 467 424 126.1
D 3 31 1201 6.16 467 424 126.1
D 3 14 1193 6.1 467 424 126.1

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