ASTROSAT CZTI

Data Quality Report

Orbit 08355

Creation date: 2024-06-27T15:31:31.701507
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/AS1A03_009T01_9000001160_08355cztM0_level2.evt modeM0/AS1A03_009T01_9000001160_08355cztM0_level2_quad_clean.evt
Size (bytes)127,097,28011,450,880
Size121.2 MB 10.9 MB
Events in quadrant A1,197,07453,893
Events in quadrant B840,59754,973
Events in quadrant C765,81754,651
Events in quadrant D922,99252,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047450
B036670
C035440
D039780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17721357.618510%
B177230.169300%
C177210.056433%
D1772150.846501%

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 1772 1772 109 109 6.15% 6.15%
B 1772 1772 1 1 0.06% 0.06%
C 1772 1772 0 0 0.00% 0.00%
D 1772 1772 8 8 0.45% 0.45%

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 15 239 431576 10410.23 194 189 41.4
A 13 251 6537 153.19 194 189 41.4
A 1 162 3657 83.69 194 189 41.4
B 0 214 45014 1103.81 202 198 40.6
B 10 246 4052 94.92 202 198 40.6
B 12 111 3809 88.94 202 198 40.6
C 8 128 4232 86.81 194 194 46.5
C 8 112 1970 38.18 194 194 46.5
C 8 144 1613 30.51 194 194 46.5
D 2 152 101990 1889.2 193 188 53.9
D 7 71 31502 581.11 193 188 53.9
D 13 105 28510 525.59 193 188 53.9

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