ASTROSAT CZTI

Data Quality Report

Orbit 52134

Creation date: 2025-05-18T23:14:25.988893
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/AS1C09_011T07_9000006470_52134cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52134cztM0_level2_quad_clean.evt
Size (bytes)884,664,00069,966,720
Size843.7 MB 66.7 MB
Events in quadrant A4,631,306586,856
Events in quadrant B4,958,961598,784
Events in quadrant C7,590,752460,706
Events in quadrant D15,093,89846,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178481
B0189211
C0267231
D0490446

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61023776.178302%
B610264410.553917%
C6102160226.253687%
D6101570693.525652%

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 7277 6102 258 258 3.55% 4.23%
B 7277 6103 424 424 5.83% 6.95%
C 7277 6103 1215 1215 16.70% 19.91%
D 7276 6101 5465 5465 75.11% 89.58%

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 6 162 447072 2781.32 643 627 160.5
A 15 174 305267 1897.88 643 627 160.5
A 7 160 246043 1528.92 643 627 160.5
B 5 172 1669094 12665.37 629 608 131.7
B 4 81 207960 1574.0 629 608 131.7
B 12 32 101265 764.08 629 608 131.7
C 15 224 4327750 27675.97 567 560 156.4
C 15 193 538606 3441.25 567 560 156.4
C 15 209 89721 570.26 567 560 156.4
D 6 42 7639358 99163.71 264 251 77.0
D 15 94 4742720 61562.28 264 251 77.0
D 12 3 660330 8568.53 264 251 77.0

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