ASTROSAT CZTI

Data Quality Report

Orbit 21141

Creation date: 2024-06-27T18:24:03.794889
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_136T01_9000003124_21141cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21141cztM0_level2_quad_clean.evt
Size (bytes)1,479,545,280216,924,480
Size1.4 GB 206.9 MB
Events in quadrant A7,645,6461,424,185
Events in quadrant B9,039,8281,429,168
Events in quadrant C7,649,2851,410,422
Events in quadrant D19,380,8431,188,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033471271
B037298295
C033437263
D069139632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03324
B03326
C03322
D03324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162052181.345264%
B162064913.029742%
C162032951.820650%
D16184377823.344043%

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 21640 16229 0 0 0.00% 0.00%
B 21640 16237 183 183 0.85% 1.13%
C 21640 16233 0 0 0.00% 0.00%
D 21639 16216 3526 3526 16.29% 21.74%

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 15 192 54354 133.1 1955 1914 394.0
A 13 252 33763 80.84 1955 1914 394.0
A 13 254 24377 57.02 1955 1914 394.0
B 7 220 528032 1413.81 1946 1892 372.1
B 0 228 513144 1373.81 1946 1892 372.1
B 0 190 83705 219.84 1946 1892 372.1
C 14 238 288988 652.94 1875 1884 439.7
C 3 233 21703 45.07 1875 1884 439.7
C 4 223 16359 32.92 1875 1884 439.7
D 1 239 7961207 18543.51 1768 1721 429.2
D 5 222 1232291 2866.9 1768 1721 429.2
D 1 52 964938 2244.04 1768 1721 429.2

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