ASTROSAT CZTI

Data Quality Report

Orbit 39665

Creation date: 2024-06-27T22:07:29.429683
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_051T01_9000005490_39665cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39665cztM0_level2_quad_clean.evt
Size (bytes)534,651,84078,310,080
Size509.9 MB 74.7 MB
Events in quadrant A5,188,219510,572
Events in quadrant B2,700,527615,813
Events in quadrant C7,796,392412,783
Events in quadrant D3,721,654484,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186863
B0112822
C0266342
D0145212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495096019.393939%
B49501102.222222%
C4950170734.484848%
D495056111.333333%

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 7073 4951 1046 1046 14.79% 21.13%
B 7073 4951 69 69 0.98% 1.39%
C 7073 4951 1466 1466 20.73% 29.61%
D 7073 4951 581 581 8.21% 11.74%

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 2481144 22467.16 542 533 110.4
A 10 83 428757 3878.47 542 533 110.4
A 15 174 85707 771.43 542 533 110.4
B 5 172 303412 2845.91 559 545 106.4
B 5 255 148632 1391.51 559 545 106.4
B 0 186 28102 258.94 559 545 106.4
C 15 208 5171372 47092.58 472 476 109.8
C 9 187 473417 4307.19 472 476 109.8
C 15 214 194946 1771.08 472 476 109.8
D 13 174 1276538 9929.63 522 507 128.5
D 12 233 151706 1176.58 522 507 128.5
D 12 227 92366 714.81 522 507 128.5

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