ASTROSAT CZTI

Data Quality Report

Orbit 27594

Creation date: 2024-06-27T19:41:58.365670
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/AS1T03_257T01_9000003976_27594cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27594cztM0_level2_quad_clean.evt
Size (bytes)745,041,60090,086,400
Size710.5 MB 85.9 MB
Events in quadrant A3,965,129559,677
Events in quadrant B4,141,122569,703
Events in quadrant C4,297,930540,606
Events in quadrant D9,605,270488,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171640
B0174510
C0180060
D0344200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81883284.005862%
B81894014.896813%
C81894145.055562%
D8187128915.744473%

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 8409 8193 0 0 0.00% 0.00%
B 8409 8193 0 0 0.00% 0.00%
C 8409 8193 45 45 0.54% 0.55%
D 8409 8193 918 918 10.92% 11.20%

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 13 254 14363 63.73 1025 997 209.7
A 3 137 10411 44.89 1025 997 209.7
A 0 226 8820 37.3 1025 997 209.7
B 10 245 42236 208.29 1018 988 198.0
B 0 230 38099 187.4 1018 988 198.0
B 4 200 34618 169.82 1018 988 198.0
C 2 16 242883 1044.58 983 986 231.6
C 14 238 156324 670.79 983 986 231.6
C 3 233 33592 140.8 983 986 231.6
D 1 52 5750013 24619.78 965 935 233.5
D 7 80 96158 407.78 965 935 233.5
D 2 250 63123 266.31 965 935 233.5

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