ASTROSAT CZTI

Data Quality Report

Orbit 39525

Creation date: 2024-06-27T22:05:42.431526
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_018T01_9000005488_39525cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39525cztM0_level2_quad_clean.evt
Size (bytes)456,960,96092,666,880
Size435.8 MB 88.4 MB
Events in quadrant A3,328,822645,045
Events in quadrant B2,594,225665,609
Events in quadrant C7,380,732516,623
Events in quadrant D3,144,800559,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139313
B0122092
C0259772
D0138892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6001130.216631%
B6001120.199967%
C6001122520.413264%
D60012263.766039%

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 7283 6002 4 4 0.05% 0.07%
B 7283 6002 4 4 0.05% 0.07%
C 7283 6002 1231 1231 16.90% 20.51%
D 7283 6002 144 144 1.98% 2.40%

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 10 83 461602 3538.11 640 625 130.3
A 15 222 375596 2877.99 640 625 130.3
A 13 254 8730 62.21 640 625 130.3
B 15 85 41870 336.47 635 615 122.6
B 5 255 38924 312.45 635 615 122.6
B 12 111 15944 125.02 635 615 122.6
C 9 187 4898523 36770.26 570 572 133.2
C 15 214 232105 1738.18 570 572 133.2
C 15 208 11134 79.29 570 572 133.2
D 13 249 592895 3923.8 608 590 151.0
D 2 249 157667 1040.58 608 590 151.0
D 2 234 33195 216.0 608 590 151.0

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