ASTROSAT CZTI

Data Quality Report

Orbit 12216

Creation date: 2024-06-27T16:23:54.373518
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_066T01_9000001802_12216cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12216cztM0_level2_quad_clean.evt
Size (bytes)1,345,294,080279,659,520
Size1.3 GB 266.7 MB
Events in quadrant A11,509,2111,894,039
Events in quadrant B13,205,0951,797,440
Events in quadrant C6,915,6321,943,181
Events in quadrant D8,151,4611,850,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02945
B02966
C02968
D029612

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457321513
B0511822410
C031086812
D034800851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142436814.781296%
B14186195713.795291%
C143141441.006008%
D143213812.660429%

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 25852 14421 304 304 1.18% 2.11%
B 25852 14342 1117 1117 4.32% 7.79%
C 25852 14487 19 19 0.07% 0.13%
D 25851 14483 192 192 0.74% 1.33%

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 3760851 10993.33 1717 1686 341.9
A 1 162 322717 938.83 1717 1686 341.9
A 8 15 212498 616.5 1717 1686 341.9
B 4 239 3838216 13079.58 1614 1579 293.3
B 4 206 1185075 4034.69 1614 1579 293.3
B 3 64 596342 2027.62 1614 1579 293.3
C 15 208 274197 713.2 1681 1692 382.1
C 4 175 45183 113.82 1681 1692 382.1
C 3 233 20111 48.21 1681 1692 382.1
D 10 199 423985 1069.07 1679 1633 395.1
D 13 104 393677 992.35 1679 1633 395.1
D 10 157 203246 510.33 1679 1633 395.1

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