ASTROSAT CZTI

Data Quality Report

Orbit 37950

Creation date: 2024-06-27T21:46:32.480150
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/AS1A11_082T01_9000005356_37950cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37950cztM0_level2_quad_clean.evt
Size (bytes)454,478,40067,461,120
Size433.4 MB 64.3 MB
Events in quadrant A3,343,871413,735
Events in quadrant B3,353,405411,521
Events in quadrant C2,879,617428,381
Events in quadrant D3,797,022387,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136723
B0137972
C0120652
D0153242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745350.609225%
B57452364.107920%
C5745360.626632%
D57452844.943429%

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 7388 5746 20 20 0.27% 0.35%
B 7388 5746 140 140 1.89% 2.44%
C 7388 5746 23 23 0.31% 0.40%
D 7388 5746 219 219 2.96% 3.81%

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 15 222 459376 3552.79 638 623 129.1
A 10 83 377849 2921.41 638 623 129.1
A 13 6 13969 103.36 638 623 129.1
B 5 172 312557 2601.61 628 612 119.9
B 0 229 281790 2345.01 628 612 119.9
B 5 184 145985 1212.4 628 612 119.9
C 15 214 242648 1658.41 628 630 145.9
C 0 10 140045 955.33 628 630 145.9
C 14 254 42180 284.72 628 630 145.9
D 1 52 1146939 7695.85 610 591 149.0
D 7 55 82960 552.97 610 591 149.0
D 10 199 42655 282.39 610 591 149.0

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