ASTROSAT CZTI

Data Quality Report

Orbit 41604

Creation date: 2024-06-27T22:30:36.928011
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_035T02_9000005680_41604cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41604cztM0_level2_quad_clean.evt
Size (bytes)390,360,96093,689,280
Size372.3 MB 89.3 MB
Events in quadrant A2,998,493663,430
Events in quadrant B2,706,852674,204
Events in quadrant C3,816,384603,922
Events in quadrant D4,527,181534,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119992
B0112962
C0149172
D0169935

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5156220.426687%
B5156350.678821%
C51562574.984484%
D515553310.339476%

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 7157 5157 5 5 0.07% 0.10%
B 7157 5157 24 24 0.34% 0.47%
C 7157 5157 250 250 3.49% 4.85%
D 7156 5156 450 450 6.29% 8.73%

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 553192 4326.59 621 607 127.7
A 7 3 18804 142.48 621 607 127.7
A 2 79 13069 97.57 621 607 127.7
B 0 186 111567 953.11 618 602 116.4
B 7 202 54864 466.07 618 602 116.4
B 0 245 53156 451.4 618 602 116.4
C 0 15 815940 6082.16 581 584 134.1
C 0 10 506956 3777.29 581 584 134.1
C 15 214 223342 1661.66 581 584 134.1
D 12 79 1205390 8874.17 563 549 135.8
D 1 47 510685 3757.37 563 549 135.8
D 13 249 502527 3697.28 563 549 135.8

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