ASTROSAT CZTI

Data Quality Report

Orbit 39492

Creation date: 2024-06-27T22:05:16.164588
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/AS1C07_001T02_9000005486_39492cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39492cztM0_level2_quad_clean.evt
Size (bytes)368,925,12086,394,240
Size351.8 MB 82.4 MB
Events in quadrant A2,654,054586,667
Events in quadrant B3,323,057598,800
Events in quadrant C2,399,002581,213
Events in quadrant D4,874,740484,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112273
B0136782
C0106022
D0182632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520960.115185%
B52091603.071607%
C520950.095988%
D520959211.364945%

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 7303 5210 3 3 0.04% 0.06%
B 7303 5210 79 79 1.08% 1.52%
C 7303 5210 2 2 0.03% 0.04%
D 7303 5210 421 421 5.76% 8.08%

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 421107 3782.52 551 542 111.2
A 15 222 64688 576.92 551 542 111.2
A 6 10 18897 165.08 551 542 111.2
B 5 172 1074910 10252.4 547 534 104.8
B 5 255 91543 868.47 547 534 104.8
B 12 111 12908 118.08 547 534 104.8
C 15 214 221366 1777.9 536 539 124.2
C 3 233 61584 491.48 536 539 124.2
C 0 10 13866 107.3 536 539 124.2
D 7 38 1695675 13515.03 512 497 125.4
D 2 249 688618 5486.14 512 497 125.4
D 13 249 212655 1691.46 512 497 125.4

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