ASTROSAT CZTI

Data Quality Report

Orbit 05278

Creation date: 2024-06-27T14:53:25.135332
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/AS1G05_240T02_9000000670_05278cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05278cztM0_level2_quad_clean.evt
Size (bytes)894,896,640132,652,800
Size853.4 MB 126.5 MB
Events in quadrant A5,387,000831,520
Events in quadrant B5,325,888833,084
Events in quadrant C5,030,227815,257
Events in quadrant D10,580,766741,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239185
B0236842
C0232792
D0394632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114991050.913123%
B11500540.469565%
C11500370.321739%
D11500152013.217391%

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 13415 11501 30 30 0.22% 0.26%
B 13415 11501 0 0 0.00% 0.00%
C 13415 11501 0 0 0.00% 0.00%
D 13415 11501 1203 1203 8.97% 10.46%

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 0 50 175134 645.64 1318 1287 269.3
A 13 251 130745 480.79 1318 1287 269.3
A 0 226 13000 43.5 1318 1287 269.3
B 0 245 44973 170.12 1337 1304 256.7
B 15 204 36330 136.45 1337 1304 256.7
B 0 184 34689 130.06 1337 1304 256.7
C 13 61 10627 31.47 1284 1293 296.6
C 1 16 8513 24.35 1284 1293 296.6
C 12 4 6395 17.2 1284 1293 296.6
D 11 145 5049902 16914.66 1213 1173 298.5
D 2 136 432794 1446.05 1213 1173 298.5
D 8 195 264236 881.34 1213 1173 298.5

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