ASTROSAT CZTI

Data Quality Report

Orbit 41780

Creation date: 2024-06-27T22:32:47.269987
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_052T04_9000005700_41780cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41780cztM0_level2_quad_clean.evt
Size (bytes)316,005,12090,780,480
Size301.4 MB 86.6 MB
Events in quadrant A2,884,793620,235
Events in quadrant B2,773,551627,763
Events in quadrant C3,119,950574,572
Events in quadrant D2,516,356564,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115853
B0115512
C0123542
D0110812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5167140.270950%
B5167380.735436%
C51672615.051287%
D5167260.503193%

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 7290 5168 4 4 0.05% 0.08%
B 7290 5168 10 10 0.14% 0.19%
C 7290 5168 250 250 3.43% 4.84%
D 7290 5168 21 21 0.29% 0.41%

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 565412 4624.24 594 582 122.1
A 15 223 12042 93.82 594 582 122.1
A 13 254 9029 69.16 594 582 122.1
B 0 190 229161 2029.9 585 569 112.6
B 4 141 98942 873.55 585 569 112.6
B 0 186 65813 579.37 585 569 112.6
C 0 10 766389 6069.0 548 550 126.2
C 15 214 202172 1597.78 548 550 126.2
C 12 249 6085 43.86 548 550 126.2
D 2 249 72760 511.92 577 561 141.0
D 12 233 56238 394.77 577 561 141.0
D 13 249 54826 384.76 577 561 141.0

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