ASTROSAT CZTI

Data Quality Report

Orbit 41287

Creation date: 2024-06-27T22:27:01.977271
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_011T42_9000005640_41287cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41287cztM0_level2_quad_clean.evt
Size (bytes)341,242,56091,002,240
Size325.4 MB 86.8 MB
Events in quadrant A2,900,365629,022
Events in quadrant B2,445,592656,763
Events in quadrant C3,094,511583,915
Events in quadrant D3,788,441524,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115003
B0104452
C0121122
D0146682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5169140.270845%
B516980.154769%
C51692094.043335%
D51694047.815825%

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 7292 5170 4 4 0.05% 0.08%
B 7292 5170 1 1 0.01% 0.02%
C 7292 5170 208 208 2.85% 4.02%
D 7292 5170 406 406 5.57% 7.85%

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 490029 3891.19 616 605 125.8
A 2 79 23834 184.68 616 605 125.8
A 12 189 6558 47.33 616 605 125.8
B 0 229 25847 216.43 611 595 116.7
B 12 111 14661 120.56 611 595 116.7
B 11 111 13901 114.05 611 595 116.7
C 0 10 552274 4091.29 579 582 134.8
C 15 214 220203 1628.69 579 582 134.8
C 15 159 45370 332.14 579 582 134.8
D 1 52 1180852 8499.3 571 556 138.9
D 5 222 236112 1696.24 571 556 138.9
D 2 249 123901 888.21 571 556 138.9

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