ASTROSAT CZTI

Data Quality Report

Orbit 19404

Creation date: 2025-02-18T13:41:27.370740
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/AS1A05_104T06_9000002878_19404cztM0_level2.fits modeM0/AS1A05_104T06_9000002878_19404cztM0_level2_quad_clean.evt
Size (bytes)846,316,800152,847,360
Size807.1 MB 145.8 MB
Events in quadrant A4,633,7261,156,689
Events in quadrant B4,981,4021,163,356
Events in quadrant C4,715,1701,087,480
Events in quadrant D16,240,249543,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198850
B0209780
C0199950
D0549720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9753530.543423%
B97531051.076592%
C9753760.779247%
D9753511852.476161%

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 11178 9754 3 3 0.03% 0.03%
B 11178 9753 28 28 0.25% 0.29%
C 11178 9753 2 2 0.02% 0.02%
D 11178 9753 4154 4154 37.16% 42.59%

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 4 2 32287 130.03 1192 1166 239.3
A 13 254 13696 52.35 1192 1166 239.3
A 0 226 10363 38.43 1192 1166 239.3
B 7 220 201648 887.12 1180 1150 226.0
B 4 216 63089 274.05 1180 1150 226.0
B 0 198 34477 147.46 1180 1150 226.0
C 14 238 175097 657.07 1128 1134 264.8
C 3 233 69810 259.39 1128 1134 264.8
C 0 207 35797 130.92 1128 1134 264.8
D 10 66 12377134 60995.83 828 803 202.9
D 7 238 508282 2501.07 828 803 202.9
D 1 52 157540 772.46 828 803 202.9

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