ASTROSAT CZTI

Data Quality Report

Orbit 41752

Creation date: 2024-06-27T22:32:25.882653
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/AS1A12_077T11_9000005696_41752cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41752cztM0_level2_quad_clean.evt
Size (bytes)339,981,12085,357,440
Size324.2 MB 81.4 MB
Events in quadrant A2,745,551588,552
Events in quadrant B2,539,193592,026
Events in quadrant C3,084,528538,019
Events in quadrant D3,820,830510,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112242
B0109802
C0121172
D0147012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5070110.216963%
B5070671.321499%
C50702615.147929%
D50702354.635108%

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 7103 5071 4 4 0.06% 0.08%
B 7102 5069 57 57 0.80% 1.12%
C 7103 5070 250 250 3.52% 4.93%
D 7102 5069 233 233 3.28% 4.60%

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 10 83 523292 4495.82 569 559 116.3
A 13 254 9037 72.92 569 559 116.3
A 13 6 8684 69.88 569 559 116.3
B 5 255 291066 2679.48 557 542 108.4
B 0 183 23970 216.07 557 542 108.4
B 0 245 14170 125.69 557 542 108.4
C 0 10 792324 6304.96 531 536 125.6
C 15 214 215233 1709.62 531 536 125.6
C 14 67 4769 33.71 531 536 125.6
D 12 79 1107765 8113.15 549 534 136.5
D 2 249 358022 2619.47 549 534 136.5
D 2 120 119441 871.28 549 534 136.5

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