ASTROSAT CZTI

Data Quality Report

Orbit 41615

Creation date: 2024-06-27T22:30:44.356740
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/AS1A12_035T02_9000005680_41615cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41615cztM0_level2_quad_clean.evt
Size (bytes)558,478,08079,459,200
Size532.6 MB 75.8 MB
Events in quadrant A2,979,828615,402
Events in quadrant B2,748,157628,177
Events in quadrant C2,917,236593,841
Events in quadrant D11,595,743179,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120922
B0119403
C0121402
D0382192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554880.144196%
B5548230.414564%
C55481112.000721%
D5548390870.439798%

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 7251 5549 1 1 0.01% 0.02%
B 7251 5549 11 11 0.15% 0.20%
C 7251 5549 97 97 1.34% 1.75%
D 7251 5549 3605 3605 49.72% 64.97%

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 83 547806 4239.02 621 608 129.1
A 2 79 20800 156.42 621 608 129.1
A 13 254 9495 68.85 621 608 129.1
B 0 186 271620 2277.65 613 594 119.0
B 5 255 27212 223.69 613 594 119.0
B 0 189 20855 170.27 613 594 119.0
C 0 10 327790 2353.9 595 598 139.0
C 15 214 243037 1744.16 595 598 139.0
C 1 23 10702 72.69 595 598 139.0
D 12 79 9103382 92190.97 399 387 98.7
D 13 249 595157 6023.56 399 387 98.7
D 2 249 223804 2262.67 399 387 98.7

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