ASTROSAT CZTI

Data Quality Report

Orbit 53574

Creation date: 2025-08-24T00:06:53.837996
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/AS1A14_004T05_9000006502_53574cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53574cztM0_level2_quad_clean.evt
Size (bytes)842,281,92075,744,000
Size803.3 MB 72.2 MB
Events in quadrant A5,140,993582,402
Events in quadrant B3,718,044639,328
Events in quadrant C11,171,087257,423
Events in quadrant D10,668,997380,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195701
B0152391
C0374301
D0359887

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62045679.139265%
B62042483.997421%
C6204368359.364926%
D6204227536.669890%

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 7114 6205 334 334 4.69% 5.38%
B 7114 6205 107 107 1.50% 1.72%
C 7114 6204 2836 2836 39.87% 45.71%
D 7114 6205 1890 1890 26.57% 30.46%

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 3 63 1172152 7080.18 669 653 165.5
A 3 62 647782 3911.05 669 653 165.5
A 15 174 305698 1843.6 669 653 165.5
B 2 249 418031 2950.52 665 644 141.5
B 10 28 116317 817.7 665 644 141.5
B 5 250 100503 705.91 665 644 141.5
C 15 224 4527956 37393.92 432 428 121.1
C 1 241 2502483 20665.06 432 428 121.1
C 4 5 1102766 9104.47 432 428 121.1
D 2 172 5337113 33746.94 546 521 158.1
D 8 176 2708542 17124.68 546 521 158.1
D 7 70 150459 948.16 546 521 158.1

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