ASTROSAT CZTI

Data Quality Report

Orbit 40209

Creation date: 2024-06-27T22:13:36.215123
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_053T01_9000005530_40209cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40209cztM0_level2_quad_clean.evt
Size (bytes)1,470,844,800382,049,280
Size1.4 GB 364.4 MB
Events in quadrant A13,720,8802,518,111
Events in quadrant B12,210,8172,604,778
Events in quadrant C11,477,4332,551,577
Events in quadrant D15,223,2332,279,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0545035
B0515735
C0482815
D0613915

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234394772.035070%
B234393051.301250%
C23439280.119459%
D234399243.942148%

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 28901 23443 319 319 1.10% 1.36%
B 28901 23443 196 196 0.68% 0.84%
C 28901 23443 14 14 0.05% 0.06%
D 28901 23442 794 794 2.75% 3.39%

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 1869580 3546.76 2590 2537 526.4
A 13 248 1759343 3337.35 2590 2537 526.4
A 9 143 34714 61.13 2590 2537 526.4
B 5 255 728170 1465.25 2584 2512 495.2
B 0 245 295074 590.74 2584 2512 495.2
B 5 172 238207 475.92 2584 2512 495.2
C 15 214 983911 1656.72 2557 2576 592.3
C 9 187 169168 281.25 2557 2576 592.3
C 4 254 117767 194.47 2557 2576 592.3
D 12 227 2777988 4527.98 2517 2449 613.0
D 12 218 791432 1287.14 2517 2449 613.0
D 13 249 710068 1154.4 2517 2449 613.0

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