ASTROSAT CZTI

Data Quality Report

Orbit 21548

Creation date: 2024-06-27T18:29:08.284799
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_166T01_9000003192_21548cztM0_level2.evt modeM0/AS1A05_166T01_9000003192_21548cztM0_level2_quad_clean.evt
Size (bytes)782,596,800134,562,240
Size746.3 MB 128.3 MB
Events in quadrant A5,122,732838,974
Events in quadrant B5,706,513846,375
Events in quadrant C6,526,413822,218
Events in quadrant D5,600,725806,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02246477
B02414566
C026720284
D02417492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11006430.390696%
B110101111.008174%
C109992612.372943%
D11007920.835832%

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 13069 11015 0 0 0.00% 0.00%
B 13066 11019 44 44 0.34% 0.40%
C 13047 11007 87 87 0.67% 0.79%
D 13074 11017 39 39 0.30% 0.35%

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 13 254 16512 57.48 1328 1302 264.6
A 0 226 11286 37.73 1328 1302 264.6
A 3 137 10904 36.29 1328 1302 264.6
B 0 230 169319 679.21 1327 1293 247.4
B 4 171 115620 462.14 1327 1293 247.4
B 0 228 102592 409.48 1327 1293 247.4
C 3 233 1361332 4618.88 1273 1280 294.5
C 14 238 201292 679.26 1273 1280 294.5
C 13 61 8758 25.4 1273 1280 294.5
D 1 52 379436 1212.48 1286 1247 311.9
D 13 153 93542 295.9 1286 1247 311.9
D 14 35 81618 257.67 1286 1247 311.9

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