ASTROSAT CZTI

Data Quality Report

Orbit 55190

Creation date: 2025-12-10T17:18:34.922364
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/AS1A14_022T16_9000006532_55190cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55190cztM0_level2_quad_clean.evt
Size (bytes)476,758,080113,875,200
Size454.7 MB 108.6 MB
Events in quadrant A4,855,220727,474
Events in quadrant B3,566,725799,735
Events in quadrant C3,939,111698,860
Events in quadrant D4,656,094657,875

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201970
B0168880
C0178270
D0197680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81142493.068770%
B8114540.665516%
C81131071.318871%
D81141421.750062%

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 8114 8114 177 177 2.18% 2.18%
B 8114 8114 34 34 0.42% 0.42%
C 8113 8113 91 91 1.12% 1.12%
D 8114 8114 144 144 1.77% 1.77%

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 3 78 1090265 5252.61 836 816 207.4
A 4 249 223111 1071.76 836 816 207.4
A 3 45 89909 429.55 836 816 207.4
B 2 249 92318 502.92 835 803 182.0
B 10 247 74092 402.76 835 803 182.0
B 4 81 50712 274.28 835 803 182.0
C 13 3 409638 1853.13 810 802 220.6
C 1 16 178080 803.55 810 802 220.6
C 14 254 53360 238.23 810 802 220.6
D 2 249 773707 3385.04 809 772 228.3
D 11 129 291422 1272.89 809 772 228.3
D 5 173 74997 325.07 809 772 228.3

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