ASTROSAT CZTI

Data Quality Report

Orbit 44287

Creation date: 2024-06-27T23:01:37.439019
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/AS1A13_012T08_9000005986_44287cztM0_level2.fits modeM0/AS1A13_012T08_9000005986_44287cztM0_level2_quad_clean.evt
Size (bytes)269,383,68052,116,480
Size256.9 MB 49.7 MB
Events in quadrant A3,383,305322,009
Events in quadrant B2,109,121368,430
Events in quadrant C1,685,491357,067
Events in quadrant D2,549,613308,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123331
B083921
C070501
D098211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312151216.404998%
B31211665.318808%
C3121802.563281%
D312133910.861903%

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 4251 3122 287 287 6.75% 9.19%
B 4251 3122 39 39 0.92% 1.25%
C 4251 3122 5 5 0.12% 0.16%
D 4251 3121 166 166 3.90% 5.32%

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 15 223 1124817 14520.49 369 360 77.4
A 10 83 802768 10361.76 369 360 77.4
A 13 248 13382 168.15 369 360 77.4
B 5 235 141157 1768.52 387 375 79.6
B 0 229 116788 1462.39 387 375 79.6
B 0 200 86504 1081.96 387 375 79.6
C 4 254 104477 1143.27 385 388 91.0
C 14 254 53548 583.89 385 388 91.0
C 1 3 8683 91.11 385 388 91.0
D 1 52 484103 5129.03 374 363 94.3
D 13 249 170070 1799.38 374 363 94.3
D 5 235 166087 1757.15 374 363 94.3

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