ASTROSAT CZTI

Data Quality Report

Orbit 09435

Creation date: 2024-06-27T15:45:54.683201
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/AS1A02_178T01_9000001340_09435cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09435cztM0_level2_quad_clean.evt
Size (bytes)800,688,960183,337,920
Size763.6 MB 174.8 MB
Events in quadrant A6,973,8391,212,607
Events in quadrant B5,551,5261,213,116
Events in quadrant C5,228,4851,180,898
Events in quadrant D5,739,4631,174,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279974
B0238074
C0231692
D0244304

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111663292.946445%
B111651241.110614%
C11166820.734372%
D111651070.958352%

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 13527 11169 24 24 0.18% 0.21%
B 13527 11169 7 7 0.05% 0.06%
C 13527 11169 0 0 0.00% 0.00%
D 13527 11169 19 19 0.14% 0.17%

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 5 1413255 5088.82 1384 1360 277.5
A 14 111 114309 407.1 1384 1360 277.5
A 1 162 55658 195.7 1384 1360 277.5
B 0 214 62586 235.96 1369 1341 259.6
B 0 219 42058 156.87 1369 1341 259.6
B 0 246 38171 141.89 1369 1341 259.6
C 9 68 59183 192.7 1319 1325 300.2
C 14 234 19462 60.41 1319 1325 300.2
C 13 61 10050 29.06 1319 1325 300.2
D 8 195 260442 761.45 1335 1301 340.3
D 1 52 201427 588.04 1335 1301 340.3
D 7 71 107730 312.73 1335 1301 340.3

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