ASTROSAT CZTI

Data Quality Report

Orbit 00587

Creation date: 2024-06-27T14:00:12.236273
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/AS1P01_118T02_9000000082_00587cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00587cztM0_level2_quad_clean.evt
Size (bytes)819,665,28053,841,600
Size781.7 MB 51.3 MB
Events in quadrant A5,935,353321,137
Events in quadrant B6,154,311322,742
Events in quadrant C5,562,154320,966
Events in quadrant D6,825,308300,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021760407
B022335375
C020604370
D024402361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01062
B01062
C01062
D01062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520940.076790%
B521660.115031%
C520740.076820%
D52113166.064095%

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 7420 5222 109 109 1.47% 2.09%
B 7420 5227 104 104 1.40% 1.99%
C 7420 5222 45 45 0.61% 0.86%
D 7420 5224 578 578 7.79% 11.06%

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 13 160 28291 80.13 1504 1490 334.5
A 15 17 26540 74.89 1504 1490 334.5
A 12 133 22528 62.9 1504 1490 334.5
B 4 250 206543 579.81 1520 1531 353.6
B 4 206 72533 200.8 1520 1531 353.6
B 5 249 19967 52.14 1520 1531 353.6
C 3 159 37684 92.32 1399 1450 392.5
C 15 241 10638 23.41 1399 1450 392.5
C 5 249 7789 16.15 1399 1450 392.5
D 1 4 923375 2249.26 1312 1367 409.9
D 13 216 193815 469.48 1312 1367 409.9
D 13 221 190719 461.93 1312 1367 409.9

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