ASTROSAT CZTI

Data Quality Report

Orbit 38681

Creation date: 2024-06-27T21:55:02.637608
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_054T01_9000005392_38681cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38681cztM0_level2_quad_clean.evt
Size (bytes)492,007,68080,928,000
Size469.2 MB 77.2 MB
Events in quadrant A3,133,847590,428
Events in quadrant B5,910,855489,624
Events in quadrant C2,586,061572,611
Events in quadrant D6,196,372449,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122633
B0209142
C0105702
D0218802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4966821.651228%
B4966118123.781716%
C4966130.261780%
D496695719.271043%

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 7058 4967 54 54 0.77% 1.09%
B 7058 4967 1056 1056 14.96% 21.26%
C 7058 4967 11 11 0.16% 0.22%
D 7058 4967 912 912 12.92% 18.36%

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 13 248 501967 4262.99 575 564 117.6
A 10 83 392365 3331.14 575 564 117.6
A 13 254 8646 68.71 575 564 117.6
B 4 251 3535122 34666.91 530 516 102.0
B 4 170 149271 1458.97 530 516 102.0
B 4 171 81280 792.12 530 516 102.0
C 15 214 203531 1564.62 557 561 129.7
C 14 254 142940 1097.55 557 561 129.7
C 0 10 45316 345.0 557 561 129.7
D 12 227 2918977 22658.75 525 511 128.8
D 5 222 522463 4052.4 525 511 128.8
D 10 118 278321 2156.9 525 511 128.8

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