ASTROSAT CZTI

Data Quality Report

Orbit 58466

Creation date: 2026-07-19T01:13:39.141998
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_044T04_9000006592_58466cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58466cztM0_level2_quad_clean.evt
Size (bytes)622,745,28086,639,040
Size593.9 MB 82.6 MB
Events in quadrant A2,978,579634,541
Events in quadrant B9,764,143421,366
Events in quadrant C4,893,036575,393
Events in quadrant D4,909,269536,570

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137012
B0334793
C0191772
D0191742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6528490.750613%
B6527269741.320668%
C65275177.920944%
D65274757.277463%

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 7588 6529 22 22 0.29% 0.34%
B 7586 6526 2459 2459 32.41% 37.68%
C 7586 6526 461 461 6.08% 7.06%
D 7586 6527 513 513 6.76% 7.86%

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 12 80 92400 517.62 711 693 177.2
A 2 143 33531 185.35 711 693 177.2
A 4 238 32356 178.71 711 693 177.2
B 2 249 6874601 61833.65 517 497 111.2
B 5 172 526464 4731.16 517 497 111.2
B 5 185 77415 691.89 517 497 111.2
C 5 10 1407429 7596.49 672 667 185.2
C 4 5 387887 2090.98 672 667 185.2
C 6 223 256127 1379.48 672 667 185.2
D 1 3 772467 4031.72 670 639 191.4
D 8 240 606799 3166.34 670 639 191.4
D 2 153 347072 1809.63 670 639 191.4

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