ASTROSAT CZTI

Data Quality Report

Orbit 39704

Creation date: 2024-06-27T22:07:57.363736
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_011T22_9000005492_39704cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39704cztM0_level2_quad_clean.evt
Size (bytes)452,145,60094,173,120
Size431.2 MB 89.8 MB
Events in quadrant A5,812,569641,204
Events in quadrant B2,829,170661,699
Events in quadrant C4,099,130608,618
Events in quadrant D3,560,966547,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213283
B0121182
C0158652
D0141992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56072554.547887%
B5607400.713394%
C56071562.782236%
D56073185.671482%

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 7340 5608 188 188 2.56% 3.35%
B 7340 5608 24 24 0.33% 0.43%
C 7340 5608 145 145 1.98% 2.59%
D 7340 5608 247 247 3.37% 4.40%

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 15 222 1974804 15248.68 634 622 129.5
A 15 174 935119 7218.1 634 622 129.5
A 10 83 431096 3325.0 634 622 129.5
B 5 172 153430 1244.0 630 611 122.8
B 0 190 96222 778.3 630 611 122.8
B 5 255 62601 504.62 630 611 122.8
C 9 187 1142885 8074.33 608 612 141.5
C 15 208 337998 2384.86 608 612 141.5
C 15 214 231948 1635.23 608 612 141.5
D 12 233 863947 5803.62 606 588 148.8
D 12 227 170249 1140.48 606 588 148.8
D 2 153 78200 521.72 606 588 148.8

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