ASTROSAT CZTI

Data Quality Report

Orbit 20460

Creation date: 2024-06-27T18:15:39.209281
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/AS1A05_198T01_9000003024_20460cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20460cztM0_level2_quad_clean.evt
Size (bytes)848,237,760143,112,960
Size808.9 MB 136.5 MB
Events in quadrant A5,449,788910,672
Events in quadrant B6,259,828910,575
Events in quadrant C6,467,402863,865
Events in quadrant D6,726,770846,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237402
B0258413
C0264892
D0277322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115931811.561287%
B115932422.087467%
C115932532.182351%
D115934263.674631%

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 12678 11593 0 0 0.00% 0.00%
B 12678 11593 23 23 0.18% 0.20%
C 12678 11593 19 19 0.15% 0.16%
D 12678 11593 260 260 2.05% 2.24%

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 15 222 21146 69.79 1409 1377 283.3
A 0 226 12264 38.43 1409 1377 283.3
A 3 137 11707 36.47 1409 1377 283.3
B 7 220 255631 943.19 1396 1359 269.6
B 0 189 204495 753.51 1396 1359 269.6
B 0 197 191048 703.63 1396 1359 269.6
C 3 233 797771 2520.9 1342 1349 315.9
C 14 238 211687 665.78 1342 1349 315.9
C 9 221 112948 353.24 1342 1349 315.9
D 15 0 801217 2385.06 1360 1321 335.4
D 1 52 296810 881.06 1360 1321 335.4
D 13 153 200001 592.41 1360 1321 335.4

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