ASTROSAT CZTI

Data Quality Report

Orbit 50178

Creation date: 2025-01-07T11:45:24.794527
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/AS1C09_003T01_9000006442_50178cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50178cztM0_level2_quad_clean.evt
Size (bytes)1,401,007,68070,130,880
Size1.3 GB 66.9 MB
Events in quadrant A10,521,231547,814
Events in quadrant B4,662,584776,984
Events in quadrant C18,254,41947,841
Events in quadrant D17,811,907199,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368391
B0194251
C0595741
D0583365

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7924229628.975265%
B79243113.924785%
C7924750794.737506%
D7923593874.946359%

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 7924 7924 2152 2152 27.16% 27.16%
B 7924 7924 213 213 2.69% 2.69%
C 7924 7924 5870 5870 74.08% 74.08%
D 7923 7923 5993 5993 75.64% 75.64%

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 98 4925075 25728.88 760 740 191.4
A 8 8 616837 3219.01 760 740 191.4
A 4 156 530866 2769.82 760 740 191.4
B 3 249 422790 2424.71 817 788 174.0
B 8 128 201317 1152.18 817 788 174.0
B 10 247 95011 541.38 817 788 174.0
C 4 111 6194043 71034.03 283 278 87.2
C 15 213 4874850 55904.69 283 278 87.2
C 15 214 938647 10761.81 283 278 87.2
D 15 168 5781879 34525.93 552 529 167.4
D 15 185 2507033 14968.71 552 529 167.4
D 15 106 1631431 9739.66 552 529 167.4

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