ASTROSAT CZTI

Data Quality Report

Orbit 39866

Creation date: 2024-06-27T22:09:37.456724
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/AS1A12_032T02_9000005500_39866cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39866cztM0_level2_quad_clean.evt
Size (bytes)191,874,24044,331,840
Size183.0 MB 42.3 MB
Events in quadrant A2,234,182264,470
Events in quadrant B1,391,298316,368
Events in quadrant C1,493,586306,023
Events in quadrant D1,777,156266,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123
B0136
C0168
D0167

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09333
B09233
C09034
D08931

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141896005
B095423763
C0104164508
D0125915602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256028511.132812%
B2667150.562430%
C264570.264650%
D25891003.862495%

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 6973 2960 231 231 3.31% 7.80%
B 6975 3078 4 4 0.06% 0.13%
C 6975 3008 4 4 0.06% 0.13%
D 6974 2991 80 80 1.15% 2.67%

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 10 764519 13011.96 284 279 58.7
A 10 83 200804 3414.14 284 279 58.7
A 13 248 118579 2014.18 284 279 58.7
B 4 170 96020 1601.96 310 303 59.7
B 5 255 18820 309.91 310 303 59.7
B 0 230 11754 191.65 310 303 59.7
C 15 214 111352 1550.0 306 309 71.6
C 9 187 102173 1421.88 306 309 71.6
C 1 16 54383 754.8 306 309 71.6
D 12 227 266361 3655.63 297 289 72.8
D 13 249 129448 1774.55 297 289 72.8
D 2 249 91180 1248.77 297 289 72.8

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