ASTROSAT CZTI

Data Quality Report

Orbit 13151

Creation date: 2024-06-27T16:36:55.710530
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/AS1T02_011T01_9000001940_13151cztM0_level2.evt modeM0/AS1T02_011T01_9000001940_13151cztM0_level2_quad_clean.evt
Size (bytes)1,657,529,280279,610,560
Size1.5 GB 266.7 MB
Events in quadrant A11,105,5331,760,637
Events in quadrant B15,082,6011,740,056
Events in quadrant C9,975,2031,780,943
Events in quadrant D12,555,6861,678,922

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471215
B0591935
C0451315
D0523105

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218876222.841870%
B21887231410.572486%
C218874752.170238%
D218878984.102892%

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 22523 21893 9 9 0.04% 0.04%
B 22523 21893 947 947 4.20% 4.33%
C 22523 21893 11 11 0.05% 0.05%
D 22523 21893 317 317 1.41% 1.45%

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 12 189 607977 1170.97 2566 2510 517.1
A 0 23 152689 290.44 2566 2510 517.1
A 1 162 136168 258.49 2566 2510 517.1
B 4 239 4323428 9217.92 2464 2398 468.8
B 3 64 513519 1090.36 2464 2398 468.8
B 0 85 236240 498.85 2464 2398 468.8
C 0 207 86852 144.42 2528 2538 583.8
C 13 61 18220 26.86 2528 2538 583.8
C 15 208 16842 24.5 2528 2538 583.8
D 1 52 1789399 2996.61 2495 2422 596.3
D 5 222 633881 1058.9 2495 2422 596.3
D 8 195 269408 447.71 2495 2422 596.3

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