ASTROSAT CZTI

Data Quality Report

Orbit 23037

Creation date: 2024-06-27T18:49:05.545283
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_004T01_9000003404_23037cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23037cztM0_level2_quad_clean.evt
Size (bytes)834,621,120181,736,640
Size796.0 MB 173.3 MB
Events in quadrant A5,521,4601,195,532
Events in quadrant B5,872,1771,205,280
Events in quadrant C6,047,8981,136,895
Events in quadrant D7,010,5141,124,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247062
B0255403
C0260772
D0290172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121651050.863132%
B121651601.315249%
C121652812.309905%
D121652522.071517%

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 13445 12167 0 0 0.00% 0.00%
B 13445 12167 34 34 0.25% 0.28%
C 13445 12167 111 111 0.83% 0.91%
D 13445 12167 134 134 1.00% 1.10%

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 17834 57.3 1429 1399 286.8
A 3 137 12780 39.68 1429 1399 286.8
A 0 226 12107 37.33 1429 1399 286.8
B 4 216 120155 439.26 1414 1377 270.4
B 3 64 112537 411.08 1414 1377 270.4
B 0 189 49037 176.25 1414 1377 270.4
C 10 9 408721 1285.94 1361 1367 316.8
C 14 238 214241 672.01 1361 1367 316.8
C 0 207 64589 199.58 1361 1367 316.8
D 13 172 633983 1881.35 1387 1343 336.3
D 1 52 476927 1414.3 1387 1343 336.3
D 9 85 202957 599.56 1387 1343 336.3

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