ASTROSAT CZTI

Data Quality Report

Orbit 00747

Creation date: 2024-06-27T14:02:24.820681
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/AS1P01_010T01_9000000108_00747cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00747cztM0_level2_quad_clean.evt
Size (bytes)3,441,263,040254,684,160
Size3.2 GB 242.9 MB
Events in quadrant A22,981,9771,661,209
Events in quadrant B30,454,0051,553,200
Events in quadrant C21,937,1641,643,309
Events in quadrant D27,615,7161,564,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0815680
B01040380
C0785260
D0954720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187182611.394380%
B18720225412.040598%
C187181500.801368%
D1871711906.357856%

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 21254 18723 957 957 4.50% 5.11%
B 21255 18724 4249 4249 19.99% 22.69%
C 21254 18723 644 644 3.03% 3.44%
D 21254 18723 3370 3370 15.86% 18.00%

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 15 233 265489 182.67 5860 5898 1421.1
A 15 17 121613 81.43 5860 5898 1421.1
A 13 17 88067 57.82 5860 5898 1421.1
B 8 38 7038114 5131.31 5818 5832 1370.5
B 7 221 543992 392.68 5818 5832 1370.5
B 0 153 495585 357.36 5818 5832 1370.5
C 15 241 150069 93.39 5519 5710 1545.8
C 3 111 104536 63.93 5519 5710 1545.8
C 3 79 84309 50.85 5519 5710 1545.8
D 7 207 6087749 3699.82 5288 5488 1643.9
D 12 22 558274 336.26 5288 5488 1643.9
D 6 226 348408 208.6 5288 5488 1643.9

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