ASTROSAT CZTI

Data Quality Report

Orbit 12417

Creation date: 2024-06-27T16:26:59.796005
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/AS1A04_201T01_9000001844_12417cztM0_level2.evt modeM0/AS1A04_201T01_9000001844_12417cztM0_level2_quad_clean.evt
Size (bytes)903,484,800173,373,120
Size861.6 MB 165.3 MB
Events in quadrant A6,304,3231,117,241
Events in quadrant B7,582,5721,145,660
Events in quadrant C5,438,9591,128,662
Events in quadrant D7,247,1521,052,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264094
B0302143
C0242553
D0295913

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11668890.762770%
B116684784.096675%
C11668400.342818%
D116683893.333905%

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 14089 11670 8 8 0.06% 0.07%
B 14089 11669 320 320 2.27% 2.74%
C 14089 11671 6 6 0.04% 0.05%
D 14089 11671 326 326 2.31% 2.79%

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 13 251 219461 763.45 1412 1387 285.6
A 12 189 195772 680.52 1412 1387 285.6
A 1 162 176561 613.27 1412 1387 285.6
B 4 239 1749918 6660.68 1405 1369 262.5
B 3 64 159781 603.43 1405 1369 262.5
B 10 244 83842 314.16 1405 1369 262.5
C 15 208 50893 156.45 1375 1384 316.4
C 14 234 25459 76.08 1375 1384 316.4
C 13 61 10256 28.04 1375 1384 316.4
D 1 52 1889045 5977.82 1328 1290 315.8
D 13 104 136428 427.93 1328 1290 315.8
D 8 195 99707 311.65 1328 1290 315.8

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