ASTROSAT CZTI

Data Quality Report

Orbit 41035

Creation date: 2024-06-27T22:23:31.803722
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_029T02_9000005590_41035cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41035cztM0_level2_quad_clean.evt
Size (bytes)367,496,64087,292,800
Size350.5 MB 83.2 MB
Events in quadrant A4,244,816584,147
Events in quadrant B2,791,338595,282
Events in quadrant C3,183,564564,723
Events in quadrant D2,966,585523,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162392
B0118481
C0128651
D0126301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5365340.633737%
B5365941.752097%
C53651502.795899%
D5365851.584343%

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 7038 5366 4 4 0.06% 0.07%
B 7038 5366 56 56 0.80% 1.04%
C 7038 5366 145 145 2.06% 2.70%
D 7038 5366 64 64 0.91% 1.19%

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 12 189 1458932 11900.72 596 584 122.5
A 10 83 457554 3729.06 596 584 122.5
A 2 79 22834 181.57 596 584 122.5
B 0 229 266415 2311.4 589 572 115.0
B 0 190 210310 1823.59 589 572 115.0
B 12 111 14909 124.65 589 572 115.0
C 14 254 639055 4733.56 575 579 134.9
C 15 214 230747 1706.43 575 579 134.9
C 12 249 42945 314.09 575 579 134.9
D 2 249 441700 3092.99 580 563 142.6
D 13 249 136686 954.41 580 563 142.6
D 2 153 60429 419.74 580 563 142.6

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