ASTROSAT CZTI

Data Quality Report

Orbit 28335

Creation date: 2024-06-27T19:50:37.682223
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/AS1A10_116T01_9000004082_28335cztM0_level2.evt modeM0/AS1A10_116T01_9000004082_28335cztM0_level2_quad_clean.evt
Size (bytes)849,695,040138,234,240
Size810.3 MB 131.8 MB
Events in quadrant A4,982,693903,394
Events in quadrant B5,172,025910,144
Events in quadrant C5,170,829871,021
Events in quadrant D9,676,606753,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219760
B0223240
C0222020
D0357470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108061191.101240%
B108061371.267814%
C108061721.591708%
D10806129611.993337%

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 11946 10806 0 0 0.00% 0.00%
B 11946 10806 0 0 0.00% 0.00%
C 11946 10807 0 0 0.00% 0.00%
D 11946 10807 1178 1178 9.86% 10.90%

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 18607 66.62 1289 1259 260.4
A 3 137 13124 45.56 1289 1259 260.4
A 0 226 10975 37.31 1289 1259 260.4
B 0 230 85702 341.64 1279 1245 247.2
B 12 111 31618 122.86 1279 1245 247.2
B 4 200 30416 118.0 1279 1245 247.2
C 14 238 197608 680.57 1234 1243 288.5
C 3 233 166729 573.55 1234 1243 288.5
C 13 61 8412 24.85 1234 1243 288.5
D 1 52 3961315 14330.47 1164 1133 276.3
D 8 195 1112769 4022.61 1164 1133 276.3
D 2 250 119288 427.56 1164 1133 276.3

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