ASTROSAT CZTI

Data Quality Report

Orbit 29242

Creation date: 2024-06-27T20:01:53.332307
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/AS1T03_272T01_9000004204_29242cztM0_level2.evt modeM0/AS1T03_272T01_9000004204_29242cztM0_level2_quad_clean.evt
Size (bytes)673,505,28081,204,480
Size642.3 MB 77.4 MB
Events in quadrant A3,260,099522,264
Events in quadrant B4,332,471525,447
Events in quadrant C7,227,235475,336
Events in quadrant D5,134,937478,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136441
B0171201
C0261838
D0197141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6549761.160483%
B65492303.511987%
C654886913.271228%
D65483705.650580%

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 7444 6550 3 3 0.04% 0.05%
B 7444 6550 35 35 0.47% 0.53%
C 7443 6549 277 277 3.72% 4.23%
D 7443 6549 216 216 2.90% 3.30%

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 13 170 23239 134.74 834 816 166.4
A 0 13 16605 94.88 834 816 166.4
A 13 254 13333 75.22 834 816 166.4
B 10 245 416801 2706.43 820 802 153.7
B 0 229 301135 1953.92 820 802 153.7
B 0 189 233003 1510.67 820 802 153.7
C 3 233 4102128 23128.69 765 771 177.3
C 14 238 124899 699.99 765 771 177.3
C 2 114 16107 86.48 765 771 177.3
D 1 52 680792 3625.37 788 765 187.6
D 8 195 453630 2414.32 788 765 187.6
D 12 233 391296 2082.0 788 765 187.6

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