ASTROSAT CZTI

Data Quality Report

Orbit 42122

Creation date: 2024-06-27T22:37:12.902963
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_061T07_9000005752_42122cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42122cztM0_level2_quad_clean.evt
Size (bytes)314,519,04087,096,960
Size299.9 MB 83.1 MB
Events in quadrant A2,821,141583,673
Events in quadrant B2,959,623592,068
Events in quadrant C2,465,787568,027
Events in quadrant D2,983,602523,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115722
B0123953
C0106592
D0125632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529190.170100%
B5290761.436673%
C529030.056711%
D5290981.852552%

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 6994 5292 2 2 0.03% 0.04%
B 6993 5291 41 41 0.59% 0.77%
C 6993 5291 0 0 0.00% 0.00%
D 6993 5291 85 85 1.22% 1.61%

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 518348 4268.82 587 574 121.3
A 12 189 19856 158.97 587 574 121.3
A 13 6 11405 89.3 587 574 121.3
B 5 255 421155 3741.0 578 562 112.4
B 4 81 212361 1883.86 578 562 112.4
B 3 112 29622 258.48 578 562 112.4
C 15 214 220659 1637.83 569 571 134.4
C 8 79 25670 186.78 569 571 134.4
C 13 61 3792 23.97 569 571 134.4
D 13 249 305599 2196.56 566 550 138.9
D 1 52 196512 1411.06 566 550 138.9
D 12 6 109080 781.49 566 550 138.9

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