ASTROSAT CZTI

Data Quality Report

Orbit 11784

Creation date: 2024-06-27T16:18:15.779322
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/AS1C03_024T01_9000001742_11784cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11784cztM0_level2_quad_clean.evt
Size (bytes)939,464,640151,902,720
Size895.9 MB 144.9 MB
Events in quadrant A6,164,893981,014
Events in quadrant B8,579,910964,177
Events in quadrant C5,007,929989,658
Events in quadrant D7,978,054925,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263541327
B033264465
C022491497
D031490577

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02206
B02204
C02208
D02204

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106752832.651054%
B107096866.405827%
C10696860.804039%
D107031801.681771%

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 13025 10702 69 69 0.53% 0.64%
B 13025 10745 325 325 2.50% 3.02%
C 13025 10732 0 0 0.00% 0.00%
D 13025 10735 90 90 0.69% 0.84%

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 8 15 238124 897.01 1314 1290 264.0
A 1 162 223463 841.48 1314 1290 264.0
A 15 174 197413 742.82 1314 1290 264.0
B 10 16 1538419 6192.91 1311 1282 248.2
B 4 239 1225052 4930.4 1311 1282 248.2
B 15 204 266898 1070.13 1311 1282 248.2
C 13 61 9187 26.76 1283 1294 294.9
C 14 234 6037 16.08 1283 1294 294.9
C 3 202 3127 6.22 1283 1294 294.9
D 1 52 2410807 7912.91 1273 1242 304.5
D 8 195 497511 1629.73 1273 1242 304.5
D 13 104 58269 187.27 1273 1242 304.5

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