ASTROSAT CZTI

Data Quality Report

Orbit 24101

Creation date: 2024-06-27T19:02:10.971491
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/AS1C05_012T04_9000003564_24101cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24101cztM0_level2_quad_clean.evt
Size (bytes)128,960,64035,588,160
Size123.0 MB 33.9 MB
Events in quadrant A852,006246,002
Events in quadrant B842,936248,929
Events in quadrant C834,544236,681
Events in quadrant D1,268,160231,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034171
B033951
C033751
D049421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1555714.565916%
B1555915.852090%
C1554845.405405%
D1554734.697555%

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 2825 1555 0 0 0.00% 0.00%
B 2825 1555 0 0 0.00% 0.00%
C 2824 1554 0 0 0.00% 0.00%
D 2824 1554 10 10 0.35% 0.64%

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 2440 48.74 221 217 45.6
A 0 226 1907 37.05 221 217 45.6
A 3 137 1904 36.99 221 217 45.6
B 12 111 4895 113.15 215 211 41.4
B 11 111 4286 98.43 215 211 41.4
B 14 111 3861 88.17 215 211 41.4
C 14 238 33883 720.37 203 204 46.8
C 0 10 3109 62.14 203 204 46.8
C 10 9 2373 46.39 203 204 46.8
D 8 195 327907 6310.16 211 204 51.9
D 11 176 84604 1625.18 211 204 51.9
D 1 52 19097 363.8 211 204 51.9

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