ASTROSAT CZTI

Data Quality Report

Orbit 41405

Creation date: 2024-06-27T22:28:37.006205
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_035T01_9000005666_41405cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41405cztM0_level2_quad_clean.evt
Size (bytes)317,756,16083,698,560
Size303.0 MB 79.8 MB
Events in quadrant A3,125,755558,863
Events in quadrant B2,577,250571,463
Events in quadrant C2,989,618531,321
Events in quadrant D2,670,339513,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124003
B0111022
C0120862
D0114832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5124410.800156%
B5124510.995316%
C51242544.957065%
D5124330.644028%

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 7006 5125 37 37 0.53% 0.72%
B 7006 5125 30 30 0.43% 0.59%
C 7006 5125 241 241 3.44% 4.70%
D 7006 5125 26 26 0.37% 0.51%

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 10 83 511274 4474.58 560 549 114.1
A 13 248 364199 3186.02 560 549 114.1
A 12 189 50099 434.12 560 549 114.1
B 5 255 277777 2543.26 554 539 109.0
B 0 190 63018 573.15 554 539 109.0
B 0 229 44269 401.16 554 539 109.0
C 0 10 670529 5340.45 533 536 125.5
C 15 214 226368 1800.09 533 536 125.5
C 0 15 9274 69.65 533 536 125.5
D 2 120 138481 1010.52 553 536 136.5
D 13 249 126110 919.89 553 536 136.5
D 2 249 112264 818.46 553 536 136.5

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