ASTROSAT CZTI

Data Quality Report

Orbit 21945

Creation date: 2024-06-27T18:34:19.840588
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/AS1A07_007T02_9000003244_21945cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21945cztM0_level2_quad_clean.evt
Size (bytes)465,209,280110,108,160
Size443.7 MB 105.0 MB
Events in quadrant A3,225,054729,156
Events in quadrant B3,611,988737,238
Events in quadrant C3,338,635723,353
Events in quadrant D3,479,279699,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136362
B0147832
C0138142
D0145072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6389500.782595%
B63891191.862576%
C63891071.674753%
D63881101.721979%

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 7599 6390 0 0 0.00% 0.00%
B 7599 6390 47 47 0.62% 0.74%
C 7599 6389 0 0 0.00% 0.00%
D 7598 6389 71 71 0.93% 1.11%

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 9904 54.51 836 819 166.7
A 0 226 7160 38.04 836 819 166.7
A 3 137 6729 35.46 836 819 166.7
B 3 64 218688 1403.33 828 808 155.3
B 0 197 93554 597.36 828 808 155.3
B 0 230 41552 262.43 828 808 155.3
C 14 238 129590 677.98 820 828 189.9
C 0 10 7025 32.63 820 828 189.9
C 13 61 5571 24.97 820 828 189.9
D 1 52 320756 1601.86 824 802 199.7
D 13 172 40652 199.51 824 802 199.7
D 2 234 22267 107.47 824 802 199.7

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