ASTROSAT CZTI

Data Quality Report

Orbit 20568

Creation date: 2024-06-27T18:16:53.825153
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/AS1A05_072T04_9000003040_20568cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20568cztM0_level2_quad_clean.evt
Size (bytes)1,572,281,280279,743,040
Size1.5 GB 266.8 MB
Events in quadrant A9,799,7791,802,972
Events in quadrant B10,179,0161,810,089
Events in quadrant C10,619,2451,763,318
Events in quadrant D15,617,3361,667,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425444
B0432454
C0437644
D0601024

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04200
C04200
D04200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207702811.352913%
B207713691.776515%
C207713571.718742%
D2077113826.653507%

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 23470 20775 0 0 0.00% 0.00%
B 23471 20776 13 13 0.06% 0.06%
C 23471 20776 0 0 0.00% 0.00%
D 23471 20776 1259 1259 5.36% 6.06%

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 14 239 58357 110.52 2513 2460 505.8
A 8 205 34428 63.21 2513 2460 505.8
A 0 226 21648 37.94 2513 2460 505.8
B 7 220 162526 336.39 2493 2427 475.9
B 0 197 60147 121.28 2493 2427 475.9
B 12 111 59305 119.51 2493 2427 475.9
C 3 9 376646 663.5 2419 2432 564.0
C 14 238 375049 660.67 2419 2432 564.0
C 3 233 356123 627.11 2419 2432 564.0
D 2 16 3170722 5510.0 2413 2348 575.0
D 1 52 1146780 1990.24 2413 2348 575.0
D 2 165 895193 1552.71 2413 2348 575.0

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